Power Adapter Lenovo OEM Part #: 04W3842

Lenovo power adapter 04W3842

Lenovo description: "Wireless,WWAN,ERC,N5321 M.2".

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Compatible Business Laptop Models (4)

Devices documented to accept this OEM component. Compatibility from OEM documentation, not bench-tested.

Installation: Not verified

ThinkPad X1 Carbon (3rd Gen)

Business Laptop Official support
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Fitment Details:

Listed in Lenovo's official parts lookup for the ThinkPad X1 Carbon (3rd Gen). Lenovo description: "Wireless,WWAN,ERC,N5321 M.2". Parts vary by configuration; match your machine type and original FRU before ordering. OEM parts list only; not bench-tested.

Source:Lenovo Parts Lookup
Source notes

Lenovo Parts Lookup (pcsupport.lenovo.com) for ThinkPad X1 Carbon (3rd Gen), machine type(s) 20BS, 20BT, lists FRU 04W3842 "Wireless,WWAN,ERC,N5321 M.2". Checked 2026-10-27.

ThinkPad X250

Business Laptop Official support
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Fitment Details:

Listed in Lenovo's official parts lookup for the ThinkPad X250. Lenovo description: "Wireless,WWAN,ERC,N5321 M.2". Parts vary by configuration; match your machine type and original FRU before ordering. OEM parts list only; not bench-tested.

Source:Lenovo Parts Lookup
Source notes

Lenovo Parts Lookup (pcsupport.lenovo.com) for ThinkPad X250, machine type(s) 20CL, 20CM, lists FRU 04W3842 "Wireless,WWAN,ERC,N5321 M.2". Checked 2026-10-27.

ThinkPad T450

Business Laptop Official support
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Fitment Details:

Listed in Lenovo's official parts lookup for the ThinkPad T450. Lenovo description: "Wireless,WWAN,ERC,N5321 M.2". Parts vary by configuration; match your machine type and original FRU before ordering. OEM parts list only; not bench-tested.

Source:Lenovo Parts Lookup
Source notes

Lenovo Parts Lookup (pcsupport.lenovo.com) for ThinkPad T450, machine type(s) 20BV, 20BU, lists FRU 04W3842 "Wireless,WWAN,ERC,N5321 M.2". Checked 2026-10-27.

ThinkPad T550

Business Laptop Official support
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Fitment Details:

Listed in Lenovo's official parts lookup for the ThinkPad T550. Lenovo description: "Wireless,WWAN,ERC,N5321 M.2". Parts vary by configuration; match your machine type and original FRU before ordering. OEM parts list only; not bench-tested.

Source:Lenovo Parts Lookup
Source notes

Lenovo Parts Lookup (pcsupport.lenovo.com) for ThinkPad T550, machine type(s) 20CK, 20CJ, lists FRU 04W3842 "Wireless,WWAN,ERC,N5321 M.2". Checked 2026-10-27.

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