This product is either discontinued or we cannot get that from suppliers.
Lenovo 4X90F84315 Thinkpad Ethernet Extension Cable, Cable Length 80mm, O/S Windows 7, Windows 8.1, Windows 10.
ThinkPad Ethernet Extension Cable is a unique Ethernet extension cable for native Ethernet on selected ThinkPad notebooks. With a small form factor and 80mm cable length, it is convenient and portable.