diff --git a/sys/dev/aac/aac_pci.c b/sys/dev/aac/aac_pci.c
index 56d57c575684..44dab795bf03 100644
--- a/sys/dev/aac/aac_pci.c
+++ b/sys/dev/aac/aac_pci.c
@@ -101,6 +101,7 @@ struct aac_ident
 	{0x1028, 0x0008, 0x1028, 0x00cf, AAC_HWIF_I960RX, "Dell PERC 3/Di"},
 	{0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, "Dell PERC 3/Di"},
 	{0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, "Dell PERC 3/Di"},
+	{0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, "Dell PERC 3/Di"},
 	{0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, "Adaptec AAC-364"},
 	{0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
 	 "Adaptec SCSI RAID 5400S"},