AC/DC Switching Power Supply with Selectable 110/220VAC Input Voltage; 27V/350W output similar to this one from Ray Wu: http://www.aliexpress.com/fm-store/701799/209855560-289599960/350W-Dual-Output-Switching-Power-Supply-88-264VAC-input-24V-350W-output-CE-and-ROHS-approved.html#transaction-history
New never used.
$30 each shipped surface from Bangkok including PayPal.