dell c3760 305w power supply fits dimension 4700 and optiplex gx280 tower systems compatible part numbers: y2103, g3148, y2682 compatible model numbers: ps63111dfs, nps305ab c, ps63111ds, nps305bb c - Newegg.com
Dell Optiplex GX280 Gaming Upgrade CPU Video Card Power Supply. - YouTube
CG802 Dell System Board (Motherboard) for OptiPlex GX280 SFF (Refurbished)
Dell Optiplex Gx280 250 Watt Power Supply PSU 0D6369 for sale online | eBay