This pcie board was pulled from a liquid cooled rack server system, presumably for testing and development in an automotive environment.
I do not have documentation, drivers or a way to test this board. As such, this is sold as-is.
The following is a Claude AI generated report. This report may include inaccuracies and is only provided for context of what this board may be. The content of this description does not include any guarantees of functionality or feature set. ONLY USE THIS CONTENT FOR POTENTIAL CONTEXT WITHOUT GUARANTEE
**The "GM GATEWAY BOARD" P/N 1X352025A Rev 2 is, with high confidence, a General Motors–owned internal engineering/HIL (hardware-in-the-loop) bench card — not a commercial product.** It is a PCIe-attached vehicle-network interface used to bring a GM in-vehicle gateway's traffic (CAN/CAN-FD/LIN, automotive Ethernet, and at least one camera link) into a lab PC. No public datasheet, forum post, eBay listing, FCC filing, or patent matches the part number, silkscreen, or asset tag — that absence is itself the strongest evidence that this is a low-volume internal asset that left a GM facility via surplus. Everything below is the most defensible interpretation given the visible features, GM's published E/E architecture, and standard automotive-industry conventions; speculative points are flagged.
## Why "GM" almost certainly means General Motors
Several signals converge. The **"AS"-prefix asset tag (AS1129159) matches GM's capitalized-equipment tagging convention** at facilities such as Warren Tech Center and Milford Proving Ground. [General Motors](https://www.gm.com/company/us-operations) The **"1X" engineering part-number prefix** is consistent with GM non-production / prototype numbering (production GM parts use the familiar 8-digit 13xxxxxx-style range used for the Serial Data Gateway Module). And the term "**GATEWAY BOARD**" maps directly onto GM's Global B / Vehicle Intelligence Platform vocabulary, which is built around a **Serial Data Gateway Module (SDGM / CGM)** [Diag.net](https://diag.net/msg/m10du7dhoyesvgeq01o1qvv9xu) that aggregates CAN, CAN-FD, LIN, and [Scribd](https://www.scribd.com/document/680562695/GM-TechLink-06-Mid-March-2021) 100/1000BASE-T1 automotive Ethernet across vehicle domains.
Alternative "GM" candidates were considered and rejected: GlobalFoundries does not make PCIe boards; the legacy Gateway PC brand is unrelated; no Tier-1 supplier (Bosch, Continental, Aptiv, HARMAN) or HIL vendor (dSPACE, NI, Vector, Technica Engineering, Intrepid Control Systems, Speedgoat, ETAS) brands cards this way — they all silkscreen their own logos. The card was **most likely designed by GM's hardware team (possibly the former Cruise hardware group, whose public job listings explicitly call out "10GBase-T, 1G-T1, MIPI, FPD-Link, LVDS, PCIe" [Startup Jobs](https://startup.jobs/senior-hardware-engineer-connectivity-cruise-automation-2023371) experience and automotive connector design) and contract-manufactured**, rather than purchased off-the-shelf.
## What the card actually does
The component stack tells the story. The **Intersil ISL8273M is an 80 A PMBus step-down µModule**, and the **Linear LTM4620AY is a dual-13 A µModule** — together capable of delivering 50–100 W. That power envelope, combined with a **JTAG header and active fan**, is the signature of a programmable FPGA/SoC payload (plausibly a Xilinx Zynq UltraScale+/Versal, an Intel Agilex, or a TSN-capable network SoC). Production in-vehicle ECUs are sealed automotive enclosures; they don't have PCIe edge fingers, exposed JTAG, or RJ-45 jacks. Everything about this board's physical form says **"plug into a lab PC,"** not "install in a car."
The **dual-Ethernet split is highly diagnostic**. The bracket-side **10GBASE-T RJ-45 is the lab/datacenter uplink** — the standard "northbound" path used by Technica, Vector, and Intrepid Ethernet recorders to push captured automotive-Ethernet traffic into a logging server. The **internal 1GBASE-T RJ-45 is consistent with an out-of-band management or media-converter port** to a 1000BASE-T1 dongle. Production vehicles never use 10GBASE-T over RJ-45; in-vehicle Ethernet is exclusively single-pair BASE-T1 over twisted pair or coax-style automotive shells.
The most likely role is therefore one of three: **(a) emulate a GM SDGM/CGM on a desk** for software development without a full vehicle; **(b) tap, sniff, or inject traffic on a HIL bench** that combines a real SDGM with simulated domain controllers; or **(c) act as a host-side capture and stimulus interface** for a complete VIP architecture rig like the ones run at GM's Sloan Southwest Software Lab. [The Autopian](https://www.theautopian.com/a-history-of-gm-software-and-how-a-new-quality-lab-aims-to-fix-the-companys-recent-problems/)
## The four color-coded connectors are almost certainly FAKRA, not Deutsch DT
This is the single most useful correction to the original description. Standard **TE/Deutsch DT color codes are gray, black, green, and brown** [Deutsch Connector](https://www.deutschconnector.com/technical/deutsch_connector_reference_guide/) — they do not include white or blue. The combination **black/white/green/blue is the canonical FAKRA RF color code** defined by RAL standards / ISO 20860- [Wellshow Technology](https://www.wellshow.com/fakra-connector/) 1 and used industry-wide for in-vehicle antenna, camera, and increasingly automotive-Ethernet coax connections. The "snap/locking" feel matches FAKRA's plastic latch perfectly. [Fakraconnectors](https://article.fakraconnectors.com/fakra-connector-types-and-uses1/) [Data Alliance](https://www.data-alliance.net/blog/fakra-connector-types)
| FAKRA color | RAL code | Standard automotive assignment |
|---|---|---|
| **Black** (Code A) | 9005 | AM/FM antenna [Scribd](https://www.scribd.com/document/512505133/FAKRA-Codes) — or generic 1000BASE-T1 in modern designs |
| **White** (Code B) | 9001 | Cellular [Fakraconnectors](https://article.fakraconnectors.com/fakra-connector-types-color-coding-guide/) / 4G / 5G telematics (TCU path) |
| **Green** (Code E) | 6002 | **Analog/digital camera or video link** — this matches the "CAMERA" silkscreen |
| **Blue** (Code C) | 5005 | GPS / GNSS antenna [Fakraconnectors](https://article.fakraconnectors.com/fakra-connector-types-color-coding-guide/) |
If the connectors are traditional FAKRA, the **Green port is almost certainly the camera link** referenced by the bracket label, and the other three carry **antenna stimulus for an emulated head unit / OnStar-style telematics module / gateway**: Black = AM/FM, White = cellular, Blue = GNSS. That set of four cleanly emulates every RF input a GM gateway/telematics ECU expects.
A plausible alternative is that these shells are **HSD, H-MTD, or mini-FAKRA carrying automotive Ethernet** (100/1000BASE-T1) rather than RF — these families reuse FAKRA-style colored housings, and four ports would map naturally to four 1000BASE-T1 domains (ADAS, infotainment, body/chassis, propulsion) routed through a GM gateway. Without a clearer photograph showing keying ridges and pin geometry, FAKRA-RF and HSD-Ethernet cannot be distinguished from the description alone.
## Probable program association
Ranking by fit:
1. **Vehicle Intelligence Platform (VIP) / Global B development and HIL testing** — GM's current production E/E architecture (2020 Corvette/CT5 onward, [GM Authority](https://gmauthority.com/blog/2025/10/new-gm-centralized-computing-platform-will-replace-global-b/) now across most of the lineup), built around the SDGM. A "Gateway Board" PCIe interface is exactly the bench fixture VIP development needs. **Highest likelihood.**
2. **Super Cruise / Ultra Cruise development support** — both ride on top of VIP and require gateway-routed ADAS Ethernet/CAN. Elektrobit publicly documented implementing GM's AUTOSAR [Elektrobit](https://www.elektrobit.com/enhanced-super-cruise-driver-assistance-technology-in-2021-cadillac-escalade/) 1000BASE-T1 gateway stack for Super Cruise on the 2021 Escalade. [Elektrobit](https://www.elektrobit.com/enhanced-super-cruise-driver-assistance-technology-in-2021-cadillac-escalade/)
3. **Cruise AV / Cruise Origin bring-up** — Cruise's hardware team's public job descriptions read almost like a spec sheet for this card; plausible but harder to confirm given Cruise's robotaxi program was defunded in late 2024. [General Motors](https://news.gm.com/home.detail.html/Pages/news/us/en/2024/dec/1210-gm.html) [Wikipedia](https://en.wikipedia.org/wiki/Cruise_(autonomous_vehicle))
4. **GM Centralized Computing Platform** (announced October 2025, launching 2028 on the Cadillac Escalade IQ with NVIDIA Thor) — possible early-bring-up fixture, but the timeline only barely overlaps with a "Rev 2" board likely fabricated several years ago.
## What is publicly available — and what is not
**No public documentation exists for this specific part.** Searches across the part number ("1X352025A," "1X352025"), the silkscreen string, the asset tag (AS1129159), GM/Cruise hardware programs, surplus/auction sites, EEVblog, Reddit, FCC filings, and Google Patents returned **zero direct hits**. The relevant secondary context — none of which mentions this card by name — includes GM's TechLink overview of the Vehicle Intelligence Platform and SDGM, GM's Ultra Cruise compute architecture announcement (Snapdragon [General Motors](https://investor.gm.com/news-releases/news-release-details/gm-brings-powerful-new-compute-architecture-ultra-cruise-help) Ride + Infineon Aurix TC397), [GM News](https://news.gm.com/newsroom.detail.html/Pages/news/us/en/2022/jan/0106-ultracruise.html) [Design News](https://www.designnews.com/automotive-engineering/gm-employs-qualcomm-power-for-ultra-cruise-hands-free-driving) Elektrobit's case study on the Super Cruise AUTOSAR Ethernet stack, the GM Centralized Computing Platform press release of October 2025, the ISL8273M datasheet on Renesas's site, the LTM4620 datasheet on Analog Devices's site, and the published FAKRA color-code reference. Expect no schematics, drivers, or firmware to ever appear publicly.
## Bottom line
The board is a **GM-internal lab tool that escaped into the wild**. Its job is to glue a GM vehicle-gateway environment (likely VIP/SDGM-class) to a lab PC over PCIe, with FAKRA-coded RF or automotive-Ethernet/camera feeds on the bracket and a 10 GbE uplink to whatever logging or simulation infrastructure the bench is wired into. The Green FAKRA port is the most likely camera input; Black/White/Blue most likely carry AM-FM, cellular, and GNSS stimulus respectively, unless the shells are actually HSD/H-MTD carrying four 1000BASE-T1 domains. **The single highest-value next step for confirmation is a clear close-up photograph of one of the colored connectors showing its keying profile** — that one detail collapses the FAKRA-RF vs. HSD-Ethernet ambiguity and pins down the exact signal set.