Apply quirk.

PR:		57469
Submitted by:	walter@pelissero.de
MFC after:	1 week

sys/cam/scsi/scsi_da.c

@@ -233,6 +233,10 @@ static struct da_quirk_entry da_quirk_table[] =
 		{T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 		/*quirks*/ DA_Q_NO_6_BYTE
 	},
+	{
+		{T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
+                /*quirks*/ DA_Q_NO_SYNC_CACHE
+	},
 	{
 		/*
 		 * The CISS RAID controllers do not support SYNC_CACHE