diff --git a/configuration.nix b/configuration.nix
index 017ac5c..d3ce799 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -20,11 +20,12 @@
   # networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
 
   # Set your time zone.
-  # time.timeZone = "Europe/Amsterdam";
+  time.timeZone = "Asia/Tokyo";
 
   # Configure network proxy if necessary
   # networking.proxy.default = "http://user:password@proxy:port/";
   # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+  networking.networkmanager.enable = true;
 
   # Select internationalisation properties.
   # i18n.defaultLocale = "en_US.UTF-8";
@@ -45,10 +46,10 @@
   # services.xserver.xkb.options = "eurosign:e,caps:escape";
 
   # Enable CUPS to print documents.
-  # services.printing.enable = true;
+  services.printing.enable = true;
 
   # Enable sound.
-  # hardware.pulseaudio.enable = true;
+  hardware.pulseaudio.enable = true;
   # OR
   # services.pipewire = {
   #   enable = true;
@@ -70,10 +71,12 @@
 
   # List packages installed in system profile. To search, run:
   # $ nix search wget
-  # environment.systemPackages = with pkgs; [
-  #   vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-  #   wget
-  # ];
+  environment.systemPackages = with pkgs; [
+    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+    wget
+    htop
+    mc
+  ];
 
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.
@@ -86,7 +89,7 @@
   # List services that you want to enable:
 
   # Enable the OpenSSH daemon.
-  # services.openssh.enable = true;
+  services.openssh.enable = true;
 
   # Open ports in the firewall.
   # networking.firewall.allowedTCPPorts = [ ... ];