Index: sys/dev/usb/quirk/usb_quirk.c
===================================================================
--- sys/dev/usb/quirk/usb_quirk.c	(revision 339210)
+++ sys/dev/usb/quirk/usb_quirk.c	(working copy)
@@ -96,6 +96,7 @@
 	USB_QUIRK(TELEX, MIC1, 0x009, 0x009, UQ_AU_NO_FRAC),
 	USB_QUIRK(SILICONPORTALS, YAPPHONE, 0x100, 0x100, UQ_AU_INP_ASYNC),
 	USB_QUIRK(LOGITECH, UN53B, 0x0000, 0xffff, UQ_NO_STRINGS),
+	USB_QUIRK(LOGITECH, G510S, 0x0000, 0xFFFF, UQ_KBD_BOOTPROTO),
 	USB_QUIRK(REALTEK, RTL8196EU, 0x0000, 0xffff, UQ_CFG_INDEX_1),
 	USB_QUIRK(ELSA, MODEM1, 0x0000, 0xffff, UQ_CFG_INDEX_1),
 	USB_QUIRK(PLANEX2, MZKUE150N, 0x0000, 0xffff, UQ_CFG_INDEX_1),
Index: sys/dev/usb/usbdevs
===================================================================
--- sys/dev/usb/usbdevs	(revision 339210)
+++ sys/dev/usb/usbdevs	(working copy)
@@ -2822,6 +2822,7 @@
 product LOGITECH UN53B		0xc032	iFeel MouseMan
 product LOGITECH WMPAD		0xc208	WingMan GamePad Extreme
 product LOGITECH WMRPAD		0xc20a	WingMan RumblePad
+product LOGITECH G510S		0xc22d  G510s Keyboard
 product LOGITECH WMJOY		0xc281	WingMan Force joystick
 product LOGITECH BB13		0xc401	USB-PS/2 Trackball
 product LOGITECH RK53		0xc501	Cordless mouse