Amazon.com: PK Power AC/DC Adapter for ASRock Vision HT Series HT 421D HT 420D HT 400D HT 323B HT 321B HT 312D HT 311D Mini PC Barebone System Power Supply Cord Cable
AC Adapter For ASRock Vision HT 311D 321B 323B Mini Desktop PC Power Supply Cord | eBay
User manual Asrock VisionX 321B (English - 63 pages)
ASRock Vision HT: Ivy Bridge Carries the SFF HTPC Forward