diff --git a/20-hw1.rules b/20-hw1.rules
new file mode 100644
index 0000000..1dbf57c
--- /dev/null
+++ b/20-hw1.rules
@@ -0,0 +1,8 @@
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="1b7c", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="2b7c", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="3b7c", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="4b7c", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="1807", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="1808", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0000", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0001", MODE="0660", TAG+="uaccess", TAG+="udev-acl"
diff --git a/sources b/sources
index 08efd38..9ed63a1 100644
--- a/sources
+++ b/sources
@@ -1,2 +1 @@
 SHA512 (v0.1.24.tar.gz) = 05360fd1e8ea13f9928efca26662f63804650d04fb5882c1a63b447f7492c1c00cbc2fbc562088fedea87d83997fa87408ba8f8db7514dcf1922efee6a7dd070
-SHA512 (20-hw1.rules) = 3873f67947548e420a2b8d2d879f1f596fdc0722bab6ceeb9448a6e29eb744ef2916b1dfd932847768269ca9b0ff1c8ce9233dd0fc1d8ec75d658f7dfadfb45d