diff --git a/drivers/usb/storage/unusual_uas.h b/drivers/usb/storage/unusual_uas.h
index 8511b54a65d9665e51f1a0cc808b4535b611ba97..d57e138567a07e2f434d159901497c6d33d426ac 100644
--- a/drivers/usb/storage/unusual_uas.h
+++ b/drivers/usb/storage/unusual_uas.h
@@ -61,6 +61,13 @@ UNUSUAL_DEV(0x0bc2, 0xab20, 0x0000, 0x9999,
 		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
 		US_FL_NO_ATA_1X),
 
+/* https://bbs.archlinux.org/viewtopic.php?id=183190 */
+UNUSUAL_DEV(0x0bc2, 0xab21, 0x0000, 0x9999,
+		"Seagate",
+		"Backup+ BK",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_NO_ATA_1X),
+
 /* Reported-by: Claudio Bizzarri <claudio.bizzarri@gmail.com> */
 UNUSUAL_DEV(0x152d, 0x0567, 0x0000, 0x9999,
 		"JMicron",