diff --git a/darwin/hardware/imac-2017/hardware.nix b/darwin/hardware/apple/imac/18-3/default.nix
similarity index 100%
rename from darwin/hardware/imac-2017/hardware.nix
rename to darwin/hardware/apple/imac/18-3/default.nix
diff --git a/flake.nix b/flake.nix
index b518490..c34db9a 100755
--- a/flake.nix
+++ b/flake.nix
@@ -202,7 +202,7 @@
           ./users/guanranwang/nixos/profiles/desktop/addtional/torrenting.nix
 
           # Hardware
-          ./nixos/hardware/81fw-lenovo-legion-y7000/Aristotle
+          ./nixos/hardware/lenovo/legion/81fw/Aristotle
 
           {networking.hostName = "Aristotle";}
         ];
@@ -220,7 +220,7 @@
           ./users/guanranwang/darwin/profiles/desktop
           ./users/guanranwang/darwin/profiles/core/addtional/networking/clash-meta-client.nix
 
-          ./darwin/hardware/imac-2017
+          ./darwin/hardware/apple/imac/18-3
 
           {networking.hostName = "Plato";}
         ];
diff --git a/nixos/hardware/81fw-lenovo-legion-y7000/default.nix b/nixos/hardware/81fw-lenovo-legion-y7000/default.nix
deleted file mode 100644
index b377e8f..0000000
--- a/nixos/hardware/81fw-lenovo-legion-y7000/default.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{...}: {
-  imports = [
-    ./hardware.nix
-  ];
-}
diff --git a/nixos/hardware/imac-2017/hardware.nix b/nixos/hardware/apple/imac/18-3/default.nix
old mode 100755
new mode 100644
similarity index 84%
rename from nixos/hardware/imac-2017/hardware.nix
rename to nixos/hardware/apple/imac/18-3/default.nix
index 5b6c5d7..c1922a7
--- a/nixos/hardware/imac-2017/hardware.nix
+++ b/nixos/hardware/apple/imac/18-3/default.nix
@@ -4,11 +4,11 @@
   ...
 }: {
   imports = [
-    ../hardware/misc/audio.nix
-    ../hardware/misc/bluetooth.nix
-    ../hardware/misc/opengl.nix
-    ../hardware/cpu/intel.nix
-    ../hardware/gpu/amd.nix
+    ../../../hardware/misc/audio.nix
+    ../../../hardware/misc/bluetooth.nix
+    ../../../hardware/misc/opengl.nix
+    ../../../hardware/cpu/intel.nix
+    ../../../hardware/gpu/amd.nix
     (modulesPath + "/hardware/network/broadcom-43xx.nix")
     (modulesPath + "/installer/scan/not-detected.nix") # what is this
   ];
diff --git a/nixos/hardware/hardware/cpu/intel.nix b/nixos/hardware/hardware/cpu/intel.nix
deleted file mode 100755
index 98719c9..0000000
--- a/nixos/hardware/hardware/cpu/intel.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{...}: {
-  boot.kernelModules = ["kvm-intel"];
-  hardware.cpu.intel.updateMicrocode = true;
-  nixpkgs.hostPlatform = "x86_64-linux";
-}
diff --git a/nixos/hardware/hardware/gpu/amd.nix b/nixos/hardware/hardware/gpu/amd.nix
deleted file mode 100644
index 0e4387b..0000000
--- a/nixos/hardware/hardware/gpu/amd.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{pkgs, ...}:
-# FOLLOWING https://nixos.wiki/wiki/AMD_GPU DIRECTLY
-# I HAVE NO IDEA WHAT AM I DOING
-{
-  boot.initrd.kernelModules = ["amdgpu"];
-  services.xserver.videoDrivers = ["amdgpu"];
-
-  # OpenCL
-  hardware.opengl = {
-    extraPackages = with pkgs; [
-      amdvlk
-      rocm-opencl-icd
-      rocm-opencl-runtime
-    ];
-    # Only available on unstable
-    extraPackages32 = with pkgs; [
-      driversi686Linux.amdvlk
-    ];
-  };
-
-  # HIP
-  systemd.tmpfiles.rules = [
-    "L+    /opt/rocm/hip   -    -    -     -    ${pkgs.hip}"
-  ];
-}
diff --git a/nixos/hardware/hardware/gpu/intel.nix b/nixos/hardware/hardware/gpu/intel.nix
deleted file mode 100644
index fcaafa6..0000000
--- a/nixos/hardware/hardware/gpu/intel.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{pkgs, ...}:
-# Following https://nixos.wiki/wiki/Intel_Graphics
-{
-  boot.initrd.kernelModules = ["i915"]; # if not enabled, plymouth's distro logo wont show for some reason
-  nixpkgs.config.packageOverrides = pkgs: {vaapiIntel = pkgs.vaapiIntel.override {enableHybridCodec = true;};};
-
-  hardware.opengl = {
-    extraPackages = with pkgs; [
-      intel-media-driver # libva_driver_name=ihd
-      vaapiIntel # libva_driver_name=i965 (older but works better for firefox/chromium)
-      vaapiVdpau
-      libvdpau-va-gl
-      intel-compute-runtime # intel opencl
-      intel-media-driver # intel vaapi
-    ];
-    extraPackages32 = with pkgs; [pkgsi686Linux.vaapiIntel];
-  };
-}
diff --git a/nixos/hardware/hardware/gpu/nvidia-prime.nix b/nixos/hardware/hardware/gpu/nvidia-prime.nix
deleted file mode 100755
index cb8b7a0..0000000
--- a/nixos/hardware/hardware/gpu/nvidia-prime.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{...}:
-# Nvidia Prime ( multi gpu on laptop )
-{
-  hardware.nvidia.prime = {
-    sync.enable = false;
-
-    ### Device specific, please put those configuration in `machines/your-machine.nix`
-    # nvidiaBusId = "PCI:1:0:0";
-    # intelBusId = "PCI:0:2:0";
-    offload = {
-      enable = true;
-      enableOffloadCmd = true;
-    };
-  };
-  environment.sessionVariables = {
-    "GAMEMODERUNEXEC" = "env __NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia __VK_LAYER_NV_optimus=NVIDIA_only"; # gamemode: nvidia offload
-  };
-}
diff --git a/nixos/hardware/hardware/gpu/nvidia.nix b/nixos/hardware/hardware/gpu/nvidia.nix
deleted file mode 100755
index e6e624c..0000000
--- a/nixos/hardware/hardware/gpu/nvidia.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{config, ...}:
-# NVIDIA drivers
-# fuck you nvidia btw
-{
-  services.xserver.videoDrivers = ["nvidia"]; # tell xorg to use the nvidia driver, also valid for wayland
-  hardware.nvidia = {
-    package = config.boot.kernelPackages.nvidiaPackages.stable;
-    open = false;
-    modesetting.enable = true;
-    #dynamicboost.enable = true;
-    powerManagement = {
-      enable = true; # experimental power management feature
-      #finegrained = true;
-    };
-  };
-}
diff --git a/nixos/hardware/hardware/misc/audio.nix b/nixos/hardware/hardware/misc/audio.nix
deleted file mode 100755
index 51da0ea..0000000
--- a/nixos/hardware/hardware/misc/audio.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{lib, ...}:
-# Audio system (pipewire)
-{
-  security.rtkit.enable = true;
-  hardware.pulseaudio.enable = lib.mkDefault false;
-  services.pipewire = {
-    enable = lib.mkDefault true;
-    pulse.enable = true;
-    jack.enable = true;
-    wireplumber.enable = true;
-    alsa = {
-      enable = true;
-      support32Bit = true;
-    };
-  };
-}
diff --git a/nixos/hardware/hardware/misc/bluetooth.nix b/nixos/hardware/hardware/misc/bluetooth.nix
deleted file mode 100755
index 0d2526f..0000000
--- a/nixos/hardware/hardware/misc/bluetooth.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{pkgs, ...}:
-# Bluetooth
-{
-  # Bluetooth manager
-  #services.blueman.enable = true;
-  environment.systemPackages = with pkgs; [blueberry];
-
-  # Bluetooth service
-  hardware.bluetooth = {
-    enable = true;
-    settings.General.FastConnectable = true;
-  };
-}
diff --git a/nixos/hardware/hardware/misc/opengl.nix b/nixos/hardware/hardware/misc/opengl.nix
deleted file mode 100755
index 4806140..0000000
--- a/nixos/hardware/hardware/misc/opengl.nix
+++ /dev/null
@@ -1,11 +0,0 @@
-{...}:
-# OpenGL
-{
-  hardware = {
-    opengl = {
-      enable = true;
-      driSupport = true;
-      driSupport32Bit = true;
-    };
-  };
-}
diff --git a/nixos/hardware/hardware/misc/tpm.nix b/nixos/hardware/hardware/misc/tpm.nix
deleted file mode 100644
index 9d5c25f..0000000
--- a/nixos/hardware/hardware/misc/tpm.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{...}: {
-  # TPM is currently broken on latest kernel,
-  # but luckily, linux-zen have a patch for it
-  # UPDATE: it got fixed in 6.5.3
-  security.tpm2 = {
-    enable = true;
-    pkcs11.enable = true; # expose /run/current-system/sw/lib/libtpm2_pkcs11.so
-    tctiEnvironment.enable = true; # tpm2tools_tcti and tpm2_pkcs11_tcti env variables
-  };
-}
diff --git a/nixos/hardware/imac-2017/default.nix b/nixos/hardware/imac-2017/default.nix
deleted file mode 100644
index b377e8f..0000000
--- a/nixos/hardware/imac-2017/default.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{...}: {
-  imports = [
-    ./hardware.nix
-  ];
-}
diff --git a/nixos/hardware/81fw-lenovo-legion-y7000/Aristotle/default.nix b/nixos/hardware/lenovo/legion/81fw/Aristotle/default.nix
similarity index 51%
rename from nixos/hardware/81fw-lenovo-legion-y7000/Aristotle/default.nix
rename to nixos/hardware/lenovo/legion/81fw/Aristotle/default.nix
index 9b9c569..dd7199b 100644
--- a/nixos/hardware/81fw-lenovo-legion-y7000/Aristotle/default.nix
+++ b/nixos/hardware/lenovo/legion/81fw/Aristotle/default.nix
@@ -1,9 +1,9 @@
 {...}: {
   imports = [
     ../default.nix
-    ../../../../nixos/flake-modules/lanzaboote.nix
-    ../../../../nixos/flake-modules/impermanence.nix
-    ../../../../nixos/flake-modules/disko.nix
+    ../../../../../flake-modules/lanzaboote.nix
+    ../../../../../flake-modules/impermanence.nix
+    ../../../../../flake-modules/disko.nix
   ];
 
   _module.args.disks = ["/dev/nvme0n1"]; # Disko
diff --git a/nixos/hardware/81fw-lenovo-legion-y7000/hardware.nix b/nixos/hardware/lenovo/legion/81fw/default.nix
old mode 100755
new mode 100644
similarity index 74%
rename from nixos/hardware/81fw-lenovo-legion-y7000/hardware.nix
rename to nixos/hardware/lenovo/legion/81fw/default.nix
index 0c97c01..ded7b09
--- a/nixos/hardware/81fw-lenovo-legion-y7000/hardware.nix
+++ b/nixos/hardware/lenovo/legion/81fw/default.nix
@@ -4,19 +4,23 @@
   ...
 }: {
   imports = [
-    ../hardware/misc/audio.nix
-    ../hardware/misc/bluetooth.nix
-    ../hardware/misc/opengl.nix
-    ../hardware/misc/tpm.nix
-    ../hardware/cpu/intel.nix
-    ../hardware/gpu/intel.nix
-    ../hardware/gpu/nvidia.nix
-    ../hardware/gpu/nvidia-prime.nix
     (modulesPath + "/installer/scan/not-detected.nix") # what is this
   ];
 
+  myFlake.nixos.hardware = {
+    cpu.intel.enable = true;
+
+    gpu.intel.enable = true;
+    gpu.nvidia.enable = true;
+    gpu.nvidia.prime = true;
+
+    misc.audio.enable = true;
+    misc.bluetooth.enable = true;
+    misc.fstrim.enable = true;
+    misc.tpm.enable = true;
+  };
+
   boot.initrd.availableKernelModules = ["xhci_pci" "ahci" "nvme" "usbhid"];
-  services.fstrim.enable = true;
 
   # Nvidia PRIME
   hardware.nvidia.prime = {
diff --git a/nixos/modules/boot/boot.nix b/nixos/modules/boot/boot.nix
index 37c7f47..0e1dafd 100755
--- a/nixos/modules/boot/boot.nix
+++ b/nixos/modules/boot/boot.nix
@@ -2,38 +2,42 @@
   config,
   lib,
   ...
-}: {
+}: let
+  cfg = config.myFlake.nixos.boot;
+in {
   options = {
     myFlake.nixos = {
       boot = {
-        silentBoot = lib.mkEnableOption "Enable silent boot";
-        noLoaderMenu = lib.mkEnableOption "Disable bootloader menu";
+        silentBoot = lib.mkEnableOption "Whether to enable silent boot.";
+        noLoaderMenu = lib.mkEnableOption "Whether to disable bootloader menu.";
       };
     };
   };
 
-  ### myFlake.nixos.boot.noLoaderMenu
-  config.boot.loader.timeout = lib.mkIf config.myFlake.nixos.boot.noLoaderMenu 0;
+  config = {
+    ### cfg.noLoaderMenu
+    boot.loader.timeout = lib.mkIf cfg.noLoaderMenu 0;
 
-  ### myFlake.nixos.boot.silentBoot
-  config.boot.consoleLogLevel = lib.mkIf config.myFlake.nixos.boot.silentBoot 0;
-  config.boot.kernelParams =
-    lib.mkIf config.myFlake.nixos.boot.silentBoot
-    (["quiet"]
-      ++ lib.optionals config.boot.initrd.systemd.enable [
-        "systemd.show_status=auto"
-        "rd.udev.log_level=3"
-      ]);
+    ### cfg.silentBoot
+    boot.consoleLogLevel = lib.mkIf cfg.silentBoot 0;
+    boot.kernelParams =
+      lib.mkIf cfg.silentBoot
+      (["quiet"]
+        ++ lib.optionals config.boot.initrd.systemd.enable [
+          "systemd.show_status=auto"
+          "rd.udev.log_level=3"
+        ]);
 
-  ### Misc
-  config.boot.loader = {
-    efi.canTouchEfiVariables = true;
-    systemd-boot = {
-      enable = lib.mkDefault true; # mkDefault for Lanzaboote
-      editor = false; # Disabled for security
-      ### Utilities
-      #netbootxyz.enable = true;
-      #memtest86.enable = true;
+    ### Misc
+    boot.loader = {
+      efi.canTouchEfiVariables = true;
+      systemd-boot = {
+        enable = lib.mkDefault true; # mkDefault for Lanzaboote
+        editor = false; # Disabled for security
+        ### Utilities
+        #netbootxyz.enable = true;
+        #memtest86.enable = true;
+      };
     };
   };
 }
diff --git a/nixos/modules/default.nix b/nixos/modules/default.nix
index 9bc08ec..01ead29 100644
--- a/nixos/modules/default.nix
+++ b/nixos/modules/default.nix
@@ -1,6 +1,7 @@
 {...}: {
   imports = [
     ./boot
+    ./hardware
     ./networking
   ];
 }
diff --git a/darwin/hardware/imac-2017/default.nix b/nixos/modules/hardware/cpu/default.nix
similarity index 61%
rename from darwin/hardware/imac-2017/default.nix
rename to nixos/modules/hardware/cpu/default.nix
index b377e8f..024255e 100644
--- a/darwin/hardware/imac-2017/default.nix
+++ b/nixos/modules/hardware/cpu/default.nix
@@ -1,5 +1,5 @@
 {...}: {
   imports = [
-    ./hardware.nix
+    ./intel.nix
   ];
 }
diff --git a/nixos/modules/hardware/cpu/intel.nix b/nixos/modules/hardware/cpu/intel.nix
new file mode 100755
index 0000000..0393195
--- /dev/null
+++ b/nixos/modules/hardware/cpu/intel.nix
@@ -0,0 +1,17 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.cpu.intel;
+in {
+  options = {
+    myFlake.nixos.hardware.cpu.intel.enable = lib.mkEnableOption "Whether to enable Intel CPU.";
+  };
+
+  config = lib.mkIf cfg.enable {
+    boot.kernelModules = ["kvm-intel"];
+    hardware.cpu.intel.updateMicrocode = true;
+    nixpkgs.hostPlatform = "x86_64-linux";
+  };
+}
diff --git a/nixos/modules/hardware/default.nix b/nixos/modules/hardware/default.nix
new file mode 100644
index 0000000..08405b1
--- /dev/null
+++ b/nixos/modules/hardware/default.nix
@@ -0,0 +1,7 @@
+{...}: {
+  imports = [
+    ./cpu
+    ./gpu
+    ./misc
+  ];
+}
diff --git a/nixos/modules/hardware/gpu/amd.nix b/nixos/modules/hardware/gpu/amd.nix
new file mode 100644
index 0000000..77188d6
--- /dev/null
+++ b/nixos/modules/hardware/gpu/amd.nix
@@ -0,0 +1,42 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.gpu.amd;
+in {
+  options = {
+    myFlake.nixos.hardware.gpu.amd.enable = lib.mkEnableOption "Whether to enable AMD GPU.";
+  };
+
+  # https://nixos.wiki/wiki/AMD_GPU
+  config = lib.mkIf cfg.enable {
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+    };
+
+    boot.initrd.kernelModules = ["amdgpu"];
+    services.xserver.videoDrivers = ["amdgpu"];
+
+    # OpenCL
+    hardware.opengl = {
+      extraPackages = with pkgs; [
+        amdvlk
+        rocm-opencl-icd
+        rocm-opencl-runtime
+      ];
+      # Only available on unstable
+      extraPackages32 = with pkgs; [
+        driversi686Linux.amdvlk
+      ];
+    };
+
+    # HIP
+    systemd.tmpfiles.rules = [
+      "L+    /opt/rocm/hip   -    -    -     -    ${pkgs.hip}"
+    ];
+  };
+}
diff --git a/nixos/modules/hardware/gpu/default.nix b/nixos/modules/hardware/gpu/default.nix
new file mode 100644
index 0000000..f1995cb
--- /dev/null
+++ b/nixos/modules/hardware/gpu/default.nix
@@ -0,0 +1,7 @@
+{...}: {
+  imports = [
+    ./amd.nix
+    ./intel.nix
+    ./nvidia.nix
+  ];
+}
diff --git a/nixos/modules/hardware/gpu/intel.nix b/nixos/modules/hardware/gpu/intel.nix
new file mode 100644
index 0000000..79939f6
--- /dev/null
+++ b/nixos/modules/hardware/gpu/intel.nix
@@ -0,0 +1,36 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.gpu.intel;
+in {
+  options = {
+    myFlake.nixos.hardware.gpu.intel.enable = lib.mkEnableOption "Whether to enable Intel GPU.";
+  };
+
+  # https://nixos.wiki/wiki/Intel_Graphics
+  config = lib.mkIf cfg.enable {
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+    };
+
+    boot.initrd.kernelModules = ["i915"]; # if not enabled, plymouth's distro logo wont show for some reason
+    nixpkgs.config.packageOverrides = pkgs: {vaapiIntel = pkgs.vaapiIntel.override {enableHybridCodec = true;};};
+
+    hardware.opengl = {
+      extraPackages = with pkgs; [
+        intel-media-driver # libva_driver_name=ihd
+        vaapiIntel # libva_driver_name=i965 (older but works better for firefox/chromium)
+        vaapiVdpau
+        libvdpau-va-gl
+        intel-compute-runtime # intel opencl
+        intel-media-driver # intel vaapi
+      ];
+      extraPackages32 = with pkgs; [pkgsi686Linux.vaapiIntel];
+    };
+  };
+}
diff --git a/nixos/modules/hardware/gpu/nvidia.nix b/nixos/modules/hardware/gpu/nvidia.nix
new file mode 100755
index 0000000..52b51b3
--- /dev/null
+++ b/nixos/modules/hardware/gpu/nvidia.nix
@@ -0,0 +1,48 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.gpu.nvidia;
+in {
+  options = {
+    myFlake.nixos.hardware.gpu.nvidia.enable = lib.mkEnableOption "Whether to enable NVIDIA GPU.";
+    myFlake.nixos.hardware.gpu.nvidia.prime = lib.mkEnableOption "Whether to enable NVIDIA Prime.";
+  };
+
+  # https://nixos.wiki/wiki/Nvidia
+  config = lib.mkIf cfg.enable {
+    hardware.opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
+    };
+
+    services.xserver.videoDrivers = ["nvidia"]; # tell xorg to use the nvidia driver, also valid for wayland
+    hardware.nvidia = {
+      package = config.boot.kernelPackages.nvidiaPackages.stable;
+      open = false;
+      modesetting.enable = true;
+      #dynamicboost.enable = true;
+      powerManagement = {
+        enable = true; # experimental power management feature
+        #finegrained = true;
+      };
+    };
+
+    # cfg.prime
+    hardware.nvidia.prime = lib.mkIf cfg.prime {
+      sync.enable = false;
+      offload = {
+        enable = true;
+        enableOffloadCmd = true;
+      };
+      ### Device specific, please put those configuration in `machines/your-machine.nix`
+      # nvidiaBusId = "PCI:1:0:0";
+      # intelBusId = "PCI:0:2:0";
+    };
+    environment.sessionVariables = {
+      "GAMEMODERUNEXEC" = lib.mkIf (cfg.prime || config.programs.gamemode.enable) "env __NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia __VK_LAYER_NV_optimus=NVIDIA_only"; # gamemode: nvidia offload
+    };
+  };
+}
diff --git a/nixos/modules/hardware/misc/audio.nix b/nixos/modules/hardware/misc/audio.nix
new file mode 100755
index 0000000..6f964a4
--- /dev/null
+++ b/nixos/modules/hardware/misc/audio.nix
@@ -0,0 +1,37 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.misc.audio;
+in {
+  options = {
+    myFlake.nixos.hardware.misc.audio.enable = lib.mkEnableOption "Whether to enable audio.";
+    myFlake.nixos.hardware.misc.audio.soundServer = lib.mkOption {
+      type = lib.types.enum ["pipewire" "pulseaudio"];
+      default = "pipewire";
+      example = "pulseaudio";
+      description = "Select desired sound system.";
+    };
+  };
+
+  # https://nixos.wiki/wiki/PipeWire
+  # https://nixos.wiki/wiki/PulseAudio
+  config = lib.mkIf cfg.enable (lib.mkMerge [
+    (lib.mkIf (cfg.soundServer == "pipewire") {
+      security.rtkit.enable = true;
+      hardware.pulseaudio.enable = false;
+      services.pipewire = {
+        enable = true;
+        alsa.enable = true;
+        alsa.support32Bit = true;
+        pulse.enable = true;
+        jack.enable = true;
+      };
+    })
+    (lib.mkIf (cfg.soundServer == "pulseaudio") {
+      hardware.pulseaudio.enable = true;
+      hardware.pulseaudio.support32Bit = true;
+    })
+  ]);
+}
diff --git a/nixos/modules/hardware/misc/bluetooth.nix b/nixos/modules/hardware/misc/bluetooth.nix
new file mode 100755
index 0000000..5d5e796
--- /dev/null
+++ b/nixos/modules/hardware/misc/bluetooth.nix
@@ -0,0 +1,25 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.misc.bluetooth;
+in {
+  options = {
+    myFlake.nixos.hardware.misc.bluetooth.enable = lib.mkEnableOption "Whether to enable bluetooth.";
+  };
+
+  # https://nixos.wiki/wiki/Bluetooth
+  config = lib.mkIf cfg.enable {
+    # Bluetooth manager
+    #services.blueman.enable = true;
+    environment.systemPackages = lib.mkIf config.services.xserver.enable (with pkgs; [blueberry]);
+
+    # Bluetooth service
+    hardware.bluetooth = {
+      enable = true;
+      settings.General.FastConnectable = true;
+    };
+  };
+}
diff --git a/nixos/modules/hardware/misc/default.nix b/nixos/modules/hardware/misc/default.nix
new file mode 100644
index 0000000..492ff1a
--- /dev/null
+++ b/nixos/modules/hardware/misc/default.nix
@@ -0,0 +1,8 @@
+{...}: {
+  imports = [
+    ./audio.nix
+    ./bluetooth.nix
+    ./fstrim.nix
+    ./tpm.nix
+  ];
+}
diff --git a/nixos/modules/hardware/misc/fstrim.nix b/nixos/modules/hardware/misc/fstrim.nix
new file mode 100644
index 0000000..252ef5f
--- /dev/null
+++ b/nixos/modules/hardware/misc/fstrim.nix
@@ -0,0 +1,15 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.misc.fstrim;
+in {
+  options = {
+    myFlake.nixos.hardware.misc.fstrim.enable = lib.mkEnableOption "Whether to enable SSD triming in background.";
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.fstrim.enable = true;
+  };
+}
diff --git a/nixos/modules/hardware/misc/tpm.nix b/nixos/modules/hardware/misc/tpm.nix
new file mode 100644
index 0000000..664866f
--- /dev/null
+++ b/nixos/modules/hardware/misc/tpm.nix
@@ -0,0 +1,23 @@
+{
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.myFlake.nixos.hardware.misc.tpm;
+in {
+  options = {
+    myFlake.nixos.hardware.misc.tpm.enable = lib.mkEnableOption "Whether to enable TPM.";
+  };
+
+  # https://nixos.wiki/wiki/TPM
+  config = lib.mkIf cfg.enable {
+    # TPM is currently broken on latest kernel,
+    # but luckily, linux-zen have a patch for it
+    # UPDATE: it got fixed in 6.5.3
+    security.tpm2 = {
+      enable = true;
+      pkcs11.enable = true; # expose /run/current-system/sw/lib/libtpm2_pkcs11.so
+      tctiEnvironment.enable = true; # tpm2tools_tcti and tpm2_pkcs11_tcti env variables
+    };
+  };
+}
diff --git a/nixos/modules/networking/dns.nix b/nixos/modules/networking/dns.nix
index d0d26a9..80824b0 100644
--- a/nixos/modules/networking/dns.nix
+++ b/nixos/modules/networking/dns.nix
@@ -7,7 +7,7 @@
     type = lib.types.enum ["google" "alidns"];
     default = "google";
     example = "alidns";
-    description = "Select your DNS provider";
+    description = "Select desired DNS provider.";
   };
 
   config.networking.nameservers = lib.mkMerge [
diff --git a/nixos/modules/networking/network-configuration-daemon.nix b/nixos/modules/networking/network-configuration-daemon.nix
index 37466a5..41d4de7 100644
--- a/nixos/modules/networking/network-configuration-daemon.nix
+++ b/nixos/modules/networking/network-configuration-daemon.nix
@@ -3,7 +3,7 @@
   config,
   ...
 }: let
-  cfg = config.myFlake.nixos.networking.network-configuration-daemon;
+  cfg = config.myFlake.nixos.networking;
 in {
   options = {
     myFlake.nixos = {
@@ -12,20 +12,26 @@ in {
           type = lib.types.enum ["iwd" "networkmanager" "networkmanager-iwd"];
           default = "iwd";
           example = "networkmanager";
-          description = "Select network configuration daemon";
+          description = "Select desired network configuration daemon.";
         };
       };
     };
   };
 
-  config = {
-    networking.wireless.iwd.enable = lib.mkIf (cfg == "iwd" || cfg == "networkmanager-iwd") true;
-
-    networking.networkmanager = lib.mkIf (cfg == "networkmanager" || cfg == "networkmanager-iwd") {
-      enable = true;
-      ethernet.macAddress = "random";
-      wifi.macAddress = "random";
-      wifi.backend = lib.mkIf (cfg == "networkmanager-iwd") "iwd";
-    };
-  };
+  config = lib.mkMerge [
+    (lib.mkIf (cfg.network-configuration-daemon == "iwd") {
+      networking.wireless.iwd.enable = true;
+    })
+    (lib.mkIf (cfg.network-configuration-daemon == "networkmanager" || cfg.network-configuration-daemon == "networkmanager-iwd") {
+      networking.networkmanager = {
+        enable = true;
+        ethernet.macAddress = "random";
+        wifi.macAddress = "random";
+      };
+    })
+    (lib.mkIf (cfg.network-configuration-daemon == "networkmanager-iwd") {
+      networking.wireless.iwd.enable = true;
+      networking.networkmanager.wifi.backend = "iwd";
+    })
+  ];
 }