NVIDIA · Network Adapters
NVIDIA ConnectX adapters and BlueField DPUs
NVIDIA ConnectX adapters, formerly Mellanox, are the standard network interface for high-performance computing, storage and AI clusters, and they are ordered by an exact part number. That number fixes the generation, the port count and connector, the speed, whether the card is Ethernet-only or runs both InfiniBand and Ethernet, and whether encryption and secure boot are enabled. This page lists the ConnectX-4 Lx to ConnectX-8 adapters and the BlueField-2 DPU that CRS PLUS sources, from 25GbE to 800 Gb/s.
Catalogue
Equipment reference
| Part Number | Model / Designation | Compatibility | Band / Interface | Condition | Lead Time | Quote |
|---|---|---|---|---|---|---|
| 900-9X81E-00EX-DT0Also: C8180 | ConnectX-8 SuperNIC C8180, single-port, downstream-port extension option | InfiniBand XDR / Ethernet · PCIe 6.0 x16 | 1 × OSFP, 800 Gb/s InfiniBand / 400GbE | On enquiry | On enquiry | |
| 900-9X81E-00EX-ST0Also: C8180 | ConnectX-8 SuperNIC C8180, single-port | InfiniBand XDR / Ethernet · PCIe 6.0 x16 | 1 × OSFP, 800 Gb/s InfiniBand / 400GbE | On enquiry | On enquiry | |
| 900-9X81Q-00CN-ST0Also: C8240 | ConnectX-8 SuperNIC C8240, dual-port | InfiniBand NDR / Ethernet · PCIe 6.0 x16 | 2 × QSFP112, 400 Gb/s | On enquiry | On enquiry | |
| MBF2H332A-AEEOT | BlueField-2 DPU, dual-port, crypto enabled, 16 GB on-board memory | Ethernet · PCIe 4.0 x8 | 2 × SFP56, 25GbE · 1GbE out-of-band management | On enquiry | On enquiry | |
| MCX4121A-ACAT | ConnectX-4 Lx EN adapter, dual-port | Ethernet · PCIe 3.0 x8 | 2 × SFP28, 10/25GbE | On enquiry | On enquiry | |
| MCX512A-ACAT | ConnectX-5 EN adapter, dual-port | Ethernet · PCIe 3.0 x8 | 2 × SFP28, 10/25GbE | On enquiry | On enquiry | |
| MCX512A-ACUT | ConnectX-5 EN adapter, dual-port, UEFI enabled | Ethernet · PCIe 3.0 x8 | 2 × SFP28, 10/25GbE | On enquiry | On enquiry | |
| MCX515A-CCAT | ConnectX-5 EN adapter, single-port | Ethernet · PCIe 3.0 x16 | 1 × QSFP28, 100GbE | On enquiry | On enquiry | |
| MCX516A-CCAT | ConnectX-5 EN adapter, dual-port | Ethernet · PCIe 3.0 x16 | 2 × QSFP28, 100GbE | On enquiry | On enquiry | |
| MCX516A-CDAT | ConnectX-5 Ex EN adapter, dual-port | Ethernet · PCIe 4.0 x16 | 2 × QSFP28, 100GbE | On enquiry | On enquiry | |
| MCX555A-ECAT | ConnectX-5 VPI adapter, single-port | InfiniBand EDR / Ethernet · PCIe 3.0 x16 | 1 × QSFP28, 100 Gb/s | On enquiry | On enquiry | |
| MCX556A-ECAT | ConnectX-5 VPI adapter, dual-port | InfiniBand EDR / Ethernet · PCIe 3.0 x16 | 2 × QSFP28, 100 Gb/s | On enquiry | On enquiry | |
| MCX556A-EDAT | ConnectX-5 Ex VPI adapter, dual-port | InfiniBand EDR / Ethernet · PCIe 4.0 x16 | 2 × QSFP28, 100 Gb/s | On enquiry | On enquiry | |
| MCX623106AC-CDAT | ConnectX-6 Dx EN adapter, dual-port, crypto and secure boot | Ethernet · PCIe 4.0 x16 | 2 × QSFP56, 100GbE | On enquiry | On enquiry | |
| MCX623106AN-CDAT | ConnectX-6 Dx EN adapter, dual-port, no crypto | Ethernet · PCIe 4.0 x16 | 2 × QSFP56, 100GbE | On enquiry | On enquiry | |
| MCX623106AS-CDAT | ConnectX-6 Dx EN adapter, dual-port, secure boot, no crypto | Ethernet · PCIe 4.0 x16 | 2 × QSFP56, 100GbE | On enquiry | On enquiry | |
| MCX631102AN-ADAT | ConnectX-6 Lx EN adapter, dual-port, no crypto | Ethernet · PCIe 4.0 x8 | 2 × SFP28, 25GbE | On enquiry | On enquiry | |
| MCX631102AS-ADAT | ConnectX-6 Lx EN adapter, dual-port, secure boot, no crypto | Ethernet · PCIe 4.0 x8 | 2 × SFP28, 25GbE | On enquiry | On enquiry | |
| MCX653105A-HDAT | ConnectX-6 VPI adapter, single-port | InfiniBand HDR / Ethernet · PCIe 4.0 x16 | 1 × QSFP56, 200 Gb/s | On enquiry | On enquiry | |
| MCX653106A-ECAT | ConnectX-6 VPI adapter, dual-port | InfiniBand HDR100 / Ethernet · PCIe 4.0 x16 | 2 × QSFP56, 100 Gb/s | On enquiry | On enquiry | |
| MCX653106A-HDAT | ConnectX-6 VPI adapter, dual-port | InfiniBand HDR / Ethernet · PCIe 4.0 x16 | 2 × QSFP56, 200 Gb/s | On enquiry | On enquiry | |
| MCX75310AAC-NEAT | ConnectX-7 VPI adapter, single-port, crypto and secure boot | InfiniBand NDR / Ethernet · PCIe 5.0 x16 | 1 × OSFP, 400 Gb/s | On enquiry | On enquiry | |
| MCX75310AAS-HEAT | ConnectX-7 VPI adapter, single-port, secure boot, no crypto | InfiniBand NDR200 / Ethernet · PCIe 5.0 x16 | 1 × OSFP, 200 Gb/s | On enquiry | On enquiry | |
| MCX75310AAS-NEAT | ConnectX-7 VPI adapter, single-port, secure boot, no crypto | InfiniBand NDR / Ethernet · PCIe 5.0 x16 | 1 × OSFP, 400 Gb/s | On enquiry | On enquiry | |
| MCX755106AC-HEAT | ConnectX-7 VPI adapter, dual-port, crypto and secure boot | InfiniBand NDR200 / Ethernet · PCIe 5.0 x16 | 2 × QSFP112, 200 Gb/s | On enquiry | On enquiry | |
| MCX755106AS-HEAT | ConnectX-7 VPI adapter, dual-port, secure boot, no crypto | InfiniBand NDR200 / Ethernet · PCIe 5.0 x16 | 2 × QSFP112, 200 Gb/s | On enquiry | On enquiry |
Cannot find a part number? Send us the number and we will identify and price it.
How to read these part numbers
The part number reads left to right. In `MCX653106A-HDAT`, `MCX6` is the ConnectX-6 generation and the digits that follow fix the card and its port count; the first letter of the suffix gives the speed, where `A` is 25GbE, `C` 100GbE, `E` 100 Gb/s InfiniBand and Ethernet, `H` 200 Gb/s and `N` 400 Gb/s. EN adapters are Ethernet-only; VPI adapters run InfiniBand or Ethernet on the same port.
On ConnectX-6 Dx, ConnectX-6 Lx and ConnectX-7, the letters before the hyphen state the security build: `AN` is no crypto and no secure boot, `AS` is secure boot without crypto, and `AC` is crypto with secure boot. ConnectX-8 SuperNICs carry a `900-` ordering number and a short model name, so `900-9X81E-00EX-ST0` is the C8180.
Ordering notes
Confirm the slot before the card: PCIe generation, lane width and bracket height all vary across this range, and a x16 card in a x8 slot will run at reduced throughput. State whether the port is to run InfiniBand or Ethernet, since VPI cards are configured for one or the other, and whether a crypto-enabled build is required, because the crypto and non-crypto variants are different part numbers.
Transceivers and cables are quoted separately. Connector type changes by generation — SFP28, QSFP28, QSFP56, QSFP112 and OSFP all appear on this page — so the optic or cable should be specified together with the adapter and the switch it connects to.
Lifecycle and availability
ConnectX-4 Lx and ConnectX-5 are earlier generations and are supplied new, as new surplus or as tested refurbished units, with condition stated per line. ConnectX-7 and ConnectX-8 are current-generation parts sourced to order against confirmed supply. Certain high-performance networking and computing products are subject to export control, and where that applies the transaction is completed only after compliance checks are satisfied for the stated end destination and end use.
Equipment condition
New — factory-sealed, supplied through the manufacturer's own channel or a qualified distributor, with full manufacturer warranty.
New surplus — unused factory stock, original packaging where available, sourced from decommissioned projects or distributor inventory. Manufacturer warranty may have lapsed; CRS PLUS warranty applies.
Refurbished / tested — previously deployed equipment, cleaned, firmware-checked and functionally tested against the manufacturer's specification before shipment. CRS PLUS warranty applies.
Condition is confirmed in writing on every quotation before you commit to an order.
Warranty
Warranty terms vary by item, by condition and by the supplier the equipment is sourced from. They are stated in writing on the quotation, per line item, before you commit to an order.
Where equipment is supplied new through the manufacturer's own channel, the manufacturer's warranty applies and is passed to you.
Send us the part numbers you need and we will confirm warranty terms alongside availability, condition, lead time and price.
Questions
Frequently asked questions
Do you hold NVIDIA ConnectX adapters in stock?
Listing here does not indicate stock held by CRS PLUS. Every line is sourced through our qualified supplier base, and availability, condition and lead time are confirmed against your enquiry before you commit. Condition is stated explicitly on every quotation.
What is the difference between a ConnectX EN adapter and a VPI adapter?
An EN adapter is Ethernet-only. A VPI (Virtual Protocol Interconnect) adapter can run either InfiniBand or Ethernet on each port, selected in firmware. MCX516A-CCAT is a ConnectX-5 EN card for 100GbE; MCX556A-ECAT is the VPI equivalent for EDR InfiniBand or 100GbE.
What do AN, AS and AC mean in a ConnectX part number?
They state the security build of the card. AN is supplied without crypto and without secure boot, AS with secure boot and without crypto, and AC with both crypto and secure boot enabled. MCX623106AN-CDAT, MCX623106AS-CDAT and MCX623106AC-CDAT are the same ConnectX-6 Dx 100GbE dual-port card in the three builds.
Can you supply a part number that is not listed on this page?
Yes. This page lists 26 line items currently identified in our supplier network, and it is not the limit of what we source. Send the part number, or the machine model and the position the part occupies, and we will identify and price it.
What condition is the equipment supplied in?
New, new-old-stock and tested refurbished are all sourced, and the condition of each line is stated on the quotation before you commit. Where a part is end-of-sale, no manufacturer warranty applies and this is said plainly rather than implied.
Which markets do you deliver to?
CRS PLUS serves buyers across the Middle East and Africa from a supplier base in China, Europe and the United States. Delivery terms and destination are confirmed per enquiry, and shipping is quoted alongside the goods.
What is the price of NVIDIA ConnectX adapters?
CRS PLUS does not publish list prices: the price of each item depends on its condition (new, new surplus or refurbished), the quantity and the destination. Send the part number and quantity through the form on this page and a structured offer follows within 72 hours, with price, condition and lead time stated per line.
What is the lead time for NVIDIA ConnectX adapters?
Lead time depends on where stock is held at the time of your enquiry, so it is confirmed per line on the quotation, together with the condition of each unit. Items that are no longer in production are quoted as new surplus or as tested refurbished units.
Can CRS PLUS propose an alternative if a part number is discontinued or unavailable?
Yes. Where a part cannot be found in the quantity required, our engineers propose an equivalent that delivers the same function from parts that are available, and state the trade-offs in writing before you commit.
Related pages
Manufacturer names, product names and part numbers are the property of their respective owners and are used here for identification purposes only. CRS PLUS sources these products through its qualified supplier base and holds no distributor, reseller or agency appointment from any manufacturer listed.
This catalogue is compiled from our supplier network's available inventory and from manufacturer product documentation, and is reviewed monthly. Listing does not indicate stock held by CRS PLUS — availability, condition and lead time are confirmed per enquiry. Last reviewed: 11 November 2026.
Need an NVIDIA adapter quoted?
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