diff --git a/flake.nix b/flake.nix
index 157962e..cc8aed0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,16 +7,21 @@
   };
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-stable.url = "github:NixOS/nixpkgs/nixos-25.05";
     impermanence.url = "github:nix-community/impermanence";
     yandex-music.url = "github:cucumber-sp/yandex-music-linux";
     home-manager = {
       url = "github:nix-community/home-manager/master";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    hm-stable = {
+      url = "github:nix-community/home-manager/release-25.05";
+      inputs.nixpkgs-stable.follows = "nixpkgs";
+    };
     zapret.url = "github:n0vvvonder/zapret-flake.nix";
   };
 
-  outputs = { self, nixpkgs, impermanence, home-manager, zapret, ...}@inputs: {
+  outputs = { self, nixpkgs, impermanence, home-manager, zapret, nixpkgs-stable, hm-stable, ...}@inputs: {
     nixosConfigurations = {
       Ratchet = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
@@ -77,6 +82,22 @@
           }
         ];
       };
+      Quark = nixpkgs-stable.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs = { inherit inputs; };
+        modules = [
+          impermanence.nixosModules.impermanence
+          ./hosts/generic/configuration_generic.nix
+          ./hosts/generic/users.nix
+          hm-stable.nixosModules.home-manager {
+            home-manager.useUserPackages = true;
+            home-manager.users.yaroslav = {
+              imports = [
+                ./home/yaroslav/home.nix
+              ];
+            };
+          }
+        ];
     };
   };
 }
diff --git a/hosts/Quark/Quark-hardware.nix b/hosts/Quark/Quark-hardware.nix
new file mode 100644
index 0000000..c24c2c9
--- /dev/null
+++ b/hosts/Quark/Quark-hardware.nix
@@ -0,0 +1,35 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+  boot.initrd.supportedFilesystems = [ "nfs" "nfsv4" "overlay" ];
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" "sr_mod" "nfs" "nfsv4" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+  boot.initrd.network.enable = true;
+  swapDevices = [ ];
+
+  fileSystems."/" = {
+    device = "192.168.1.222:/share/nixos-1";
+    fsType = "nfs4";
+    options = [ "defaults" ];
+  };
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  boot.initrd.network.flushBeforeStage2 = false;
+  # networking.interfaces.enp3s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp5s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}
diff --git a/hosts/generic/users.nix b/hosts/generic/users.nix
index 1819e28..7fc1340 100644
--- a/hosts/generic/users.nix
+++ b/hosts/generic/users.nix
@@ -9,6 +9,11 @@
       tree
     ];
     initialHashedPassword = "$6$.r5fJE91KtrOA2T.$JVjtzlFWx.RsTsNmO5WOsi1MhK6TUTKo8K5F2GgG.bAXYuYjGu4sK3SMzhk4oJ9FBoAcnyHmk7sLMsgLbUeoE1";
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEqOGDr8w8p2rYpePF7rDS4RRtIEOBggx85ybERyjngI yaroslav@Ratchet"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHqNEL4CNjvbgCdlaXNo/u+rHu7uPYpL2onEJ12H1bjZ u0_a326@localhost"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINgYswQa7LdwBpNkiw73du4nocbbET9FXKzWtjivBwHv yaroslav@Aphelion"
+      ];
   };
   users.users.root = {
     initialHashedPassword = "$y$j9T$eS.via4Hx/iPNJKAFbVah/$aHFf172uH6UYrSXPMrnbaFkAQ2o8AnJcYd4JgX1/of5";