I found this in my stuff, I do not know anything about it as I am not a network Telecom guy, except it lights up and the screen says it has an interface error. It appears to be for optical networks, made by HP, looks to be in good shape physically, however it may have dead memory batteries or something. Looks exotic! If you know what this is, or have one that needs parts, or use them at work, this is for you! 1998 firmware code on LCD. Have fun.