Network Adapters - Network Products

MCX456A-ECAT

MCX456A-ECAT - Mellanox ConnectX-4 VPI InfiniBand 1-Port 100GbE QSFP28 PCI Express 3.0 x16 Gigabit Ethernet Network Adapter Card

£812.83 Incl. VAT: £975.40
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MCX456A-FCAT

MCX456A-FCAT - Mellanox ConnectX-4 VPI InfiniBand 1-Port 100GbE QSFP28 PCI Express 3.0 x16 Gigabit Ethernet Network Adapter Card

£609.31 Incl. VAT: £731.17
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MCX512A-ACAT

MCX512A-ACAT - Mellanox ConnectX-5 2-Ports 10/25GbE SFP28 PCI Express 3.0 x8 Gigabit Ethernet Network Adapter Card

£468.90 Incl. VAT: £562.68
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MCX516A-BDAT

MCX516A-BDAT - Mellanox ConnectX-5 EN 2-Ports 100GbE QSFP28 PCI Express 3.0 x16 Gigabit Ethernet Network Adapter Card

£623.82 Incl. VAT: £748.58
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MCX516A-CCAT

MCX516A-CCAT - Mellanox ConnectX-5 100GbE CX516A Dual Port QSFP28 Network Adapter

£633.24 Incl. VAT: £759.89
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MCX542A-ACAN

MCX542A-ACAN - NVIDIA ConnectX-5 EN Adapter Card for OCP2.0 Type 1

£175.00 Incl. VAT: £210.00
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MCX546A-CDAN

MCX546A-CDAN - Mellanox 2-Ports 100 Gigabit QSFP28 PCI-Express Network Adapter

£540.82 Incl. VAT: £648.98
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MCX555A-ECAT

MCX555A-ECAT - Mellanox ConnectX-5 VPI EDR InfiniBand 1-Port 100GbE QSFP28 PCI Express 3.0 x16 Low Profile Network Adapter Card

£496.00 Incl. VAT: £595.20
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MCX556A-ECAT

MCX556A-ECAT - Mellanox ConnectX-5 2-Ports 100GbE QSFP28 PCI Express 4.0 x16 Gigabit Ethernet Network Adapter Card

£712.30 Incl. VAT: £854.76
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MCX556A-EDAT

MCX556A-EDAT - Mellanox ConnectX-5 2-Ports 100GbE QSFP28 PCI Express 4.0 x16 Gigabit Ethernet Network Adapter Card

£570.32 Incl. VAT: £684.38
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MCX613106A-VDAT

MCX613106A-VDAT - Mellanox ConnectX-6 EN 2-Ports 200Gb/s PCI Express 4.0 x 16 Ethernet Network Adapter Card

£913.28 Incl. VAT: £1,095.94
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MCX621102AC-ADAT

MCX621102AC-ADAT - Mellanox ConnectX-6 Dx Dual-Port 25GbE SFP28 PCI Express 4.0 x8 Network Adapter

£444.62 Incl. VAT: £533.54
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Buy Network Adapters for High-Speed UK Server and Desktop Connectivity

When you buy network adapters from BulkDevices UK, you eliminate the performance bottleneck that limits modern infrastructure. The need for hardware-level latency elimination is expected to be stronger in 2026, particularly with the virtualised workloads, NVMe storage, and high-frequency trading applications that are being deployed in the data centres of the UK. Maximum throughput is dependent on the network adapters you choose for each server and workstation in your UK deployment. It is one of the most important hardware selections that network interface cards UK purchasers consistently make in any network upgrade task. BulkDevices UK is a fully stocked company for instant deployment.

Ethernet Network Adapters and NIC Cards for UK Infrastructure

From the standard Gigabit copper card for your UK desktop to the 100GbE QSFP28 for hyperscale data centre spine connections, modern Ethernet network adapters range across the board. The infrastructure of NIC cards in the UK today often includes hardware offload engines for TCP/IP processing, Remote Direct Memory Access (RDMA), and SR-IOV virtualisation, all of which work independently of the main server CPU. This architecture significantly increases application performance by freeing up the processor for real work. Our full range of Network Products for UK Infrastructure will provide Network Adapters compatibility throughout your network

Selecting PCIe Network Adapters by Speed for UK Deployments

The deployment is a success if you match the NIC speed to your switch infrastructure and application workload requirements. The following speed standards relate to particular applications in the UK:

Gigabit Ethernet (1GbE) Deploy gigabit Ethernet adapters for upgrading legacy UK office desktops and branch office servers to standard business network speeds, replacing failed onboard NICs or adding connectivity.
10GbE Server Uplinks Use 10GbE network adapters for UK rack servers running the top-of-the-rack 10G switches, connected to NAS storage traffic, virtualisation backplane and multi-tenant cloud application workloads.
25GbE/100GbE Data Centre Set up high-speed network adapters with RDMA over Converged Ethernet (RoCE) for ultra-low latency applications such as financial trading, AI inference and high-performance computing workloads.

Choosing the right PCIe network adapters can help you save money while providing the right performance for your network infrastructure.

Server Network Adapters and Enterprise NIC Cards

Server network adapters vary from desktop NICs in three critical areas: They support SR-IOV for virtualisation; They have hardware-based TCP offload engines (TOE); They are validated against specific server platforms, such as Dell PowerEdge and HPE ProLiant. Network interface cards at this level also support teaming and bonding for link aggregation that provides failover redundancy and bandwidth increases for UK production server environments. These enterprise features become essential for using a wired network adapter in data centre racks and not an optional add-on. Most computer network adapters designed for server use, they come with dual or quad ports for maximum density.

Top Brands: Intel, Broadcom, Dell, HPE, and Cisco Network Adapters

The UK market in 2026 recognises distinct positions for each major manufacturer. Intel network adapters (X710/E810 Series) serve as the “Universal Engine,” with Intel silicon inside the majority of UK server NICs due to unmatched driver stability across Linux, Windows Server, and VMware ESXi environments. Broadcom network adapters (BCM57XXX/P-Series) dominate as the “Virtualisation Champion,” offering the most advanced SR-IOV implementation for UK cloud service providers and hyperscale data centres. Dell network adapters and HPE network adapters represent the “OEM Validated” choices, specifically firmware-tested against PowerEdge and ProLiant server platforms for guaranteed compatibility in UK enterprise deployments. Cisco network adapters (VIC Series) excel through their unique fabric extender architecture used in UK UCS blade server environments.

Frequently Asked Questions (FAQs)

What is the difference between a server NIC and a desktop network adapter?
Server NICs include hardware offload engines (TOE, RDMA) and SR-IOV support for virtualisation, plus validation against specific server platforms. Desktop adapters are simpler, designed for standard connectivity without the advanced features UK production server environments require for maximum performance.

Do I need a 10GbE adapter for my UK office workstations?
Only if your workload justifies it. Video editing, large CAD file transfers, and NAS-heavy workflows benefit significantly from 10GbE. Standard UK office tasks like email, web browsing, and Office 365 perform identically on Gigabit Ethernet, making 10GbE an unnecessary expense for most desktop users.

Can I install a server NIC in a standard desktop PC?
Yes, if the desktop has a compatible PCIe slot. However, server NICs may require specific driver installations, and their advanced features (SR-IOV, RDMA) will remain inactive without a compatible hypervisor or operating system configuration.

What is link aggregation, and do UK businesses need it?
Link aggregation (LACP/802.3ad) bonds multiple network adapters into one logical connection, combining bandwidth and providing failover. UK businesses with file servers, NAS devices, or database servers experiencing network bottlenecks benefit significantly from deploying dual-port NICs with link aggregation configured.

Why Buy Network Adapters from BulkDevices UK?

We maintain a UK-based stock of Gigabit through 100GbE adapters, including OEM-branded server NICs validated for specific Dell, HPE, and Cisco server platforms. Our nationwide delivery supports urgent server maintenance, with competitive pricing for bulk UK IT procurement. Every refurbished enterprise NIC undergoes rigorous testing. For external circuit connectivity, explore our WAN adapters range for ISP interface cards. Extend your network reach with our media converters for fibre-to-copper signal conversion.