Serial cable and Tripp-Lite USA 19HS USB to Serial Adapter Included. Power cables not included but they take the standard 300V Universal Power Cord for NEMA 5-15P to IEC320C13 power cables.
Model J9280A. Top one is running Software Y.11.35, bottom one is running Software Y.11.16. You can tell them apart because the bottom one has the HP logo on it while the top one doesn't. The Reset and Clear switches on the bottom one are a bit finicky to press but they do work. Config on both has been wiped.
Would prefer they go as a pair.