VM asking for items returned as I have closed my account

[HEV2]

Item Type Item Description Serial Number

Broadband Router	Arris Hub 3	1835D1F58C53
Powerline Adaptor	Virgin Ethernet Booster	VAAT8V25Q369
Powerline Adaptor	Virgin WiFi Booster	VAAU8V25Q369

These items are to be returned.  However I do not know what the Powerline Adaptors are? Anyone have a photo? 

[Adduxi]

These are the two white boxes, one big and one small, and are no longer used by VM.  They were replaced by the Pods quite some time ago.  They also seem have a penchant to overheat and go bang!..

See the following, some have photos.

Booster Plug blown in socket - Virgin Media Community - 5393420

https://community.virginmedia.com/t5/Networking-and-WiFi/Booster-Plug-blown-in-socket/td-p/5393420

[HEV2]

Luckily we found the 2 adaptors which are similar to the photo provided below but I think they had been updated; they had proved to be useless to us in any case.  They have now been returned to Virgin (who didn't supply both serial numbers either).