
7NGFF-F0-0428 (NGFF M KEY H:4.2mm GEN4) is an M.2 expansion card slot connector in KINGCONN's m-2 series. It has a pitch of 0.50 mm and a mated height of 4.2 mm, with a current rating of 0.5 A max per pin at an operating voltage of 50V AC and contact resistance of 55 mΩ per pin. The housing is molded from LCP with a UL94V-0 flammability rating. Connectors of this type are used in laptops, desktop motherboards and embedded systems for mounting M.2 SSD and wireless expansion cards. The part is RoHS compliant, and the engineering drawing (PDF) is available for download on this page.
7NGFF-F0-0428 is part of the KINGCONN M.2 series (Expansion Card Slots). The catalogue description reads, verbatim: "NGFF M KEY H:4.2mm GEN4". Everything stated on this page comes from engineering drawing 7NGFF-F0-0428, revision A, which downloads from this page.
Materials and markings as recorded on the drawing: Housing material LCP; UL flammability rating UL94V-0. The part is marked RoHS compliant.
The KINGCONN M.2 series lists 5 models.
Across the series, mated heights cover 3.2mm, 4mm and 4.2mm — those are series ranges, not this model's values; read the individual drawing for the model you shortlist.
This model's own drawing states: Pitch 0.50 mm; Mated height 4.2 mm; Operating voltage 50V AC; Current rating 0.5 A MAX. / PIN; Contact resistance 55 mΩ/PIN.
M.2 series M.2 Key Types (A / B / M / E), M.2 Sizes and the M.2 Connector
This part belongs to the Expansion Card Slots group. These application pages set out the connector considerations for each:
The engineering drawing (PDF) downloads directly from this page — drawing 7NGFF-F0-0428, revision A — with dimensions and pin assignment. Every cell of the specification table below comes from that drawing.
For samples or pricing use the RFQ button on this page; the subject line is pre-filled with the part number.
It is a KINGCONN M.2 series part (Expansion Card Slots). The catalogue description is "NGFF M KEY H:4.2mm GEN4", and the source drawing is 7NGFF-F0-0428 revision A.
From source drawing 7NGFF-F0-0428 (revision A): Pitch 0.50 mm; Mated height 4.2 mm; Operating voltage 50V AC; Current rating 0.5 A MAX. / PIN; Contact resistance 55 mΩ/PIN; Housing material LCP; UL flammability rating UL94V-0; RoHS compliant. The specification table further down this page lets you check every value.
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Yes. The 7NGFF-F0-0428 drawing PDF downloads from this page with dimensions and pin assignment; every cell of the specification table traces back to it.
Source: engineering drawing for this part number 7NGFF-F0-0428 rev. A