The 250-U2 is available as a fully-programmable device for customers preferring to develop and deploy their own application codes.

Key Features

  • U.2 SSD drive form factor
  • 15mm wide = 40W power limit
  • (1) Xilinx XCKU15P-2FFVA1156I
  • (1) 4GB Discrete DDR4 x72 Memory Bank @ 2400 MTPS
  • Available pre-configured with NVMe-oF accelerated functions:
    • Erasure Coding
    • Deduplication
    • Compression
  • FPGA Configuration Functions (JTAG, Remote Flash Update, Reconfiguration, Fallback Mechanism, etc.)
  • Flash update via software or SMBus
  • Board Health Monitoring (Temperatures, Power, Voltages, etc.)
  • Unique Board Data in PROM
  • On-Board Anti-Bricking for Deployment in Data Centre
  • On-board NVMe compliant SMBus controller (Spec. 1.0a)
  • Hot swapping tolerant


This energy-efficient, flexible compute node is intended to be deployed within conventional U.2 NVMe storage arrays (approximately 1:8 ratio) allowing FPGA-accelerated instances of:

  • Erasure Coding & Deduplication
  • Compression, Encryption & Hashing
  • String/Image Search & Database Sort/Join/Filter

Board Specifications

Form Factor

  • U.2 compliant 2.5” Drive Form Factor
  • Height: 15mm

Host Interface

  • U.2 Connector
  • Compliant to SFF-8639
  • Actual performance is host computer chipset & operating


  • Xilinx Kintex UltraScale+ FFVA1156 package
  • Default configuration: KU15P
  • Core speed grade -2
  • Industrial temperature grade
  • Contact Nallatech for other FPGA options


  • One bank of DDR4 SDRAM x 72 bits
  • 8GB per bank (16GB version also available)
  • Transfer Rate: 2400 MT/s

Application Development

  • Vivado Design Suite HLx Editions: HDL and C/C++ with HLS


  • Hot swapping tolerant
  • On-card power derived from U.2 supplies
  • Power dissipation is application dependent
  • Typical FPGA power consumption 20W
  • Card designed to deliver up to 25W power consumption


  • Manufactured to ISO9001:2008 IPC JSTD-001 -Class III
  • RoHS compliant

Datacenter Deployment

  • On-board NVMe compliant SMBUs controller (Spec. 1.0a)
  • Field flash update via software or SMBus
  • SMBus FPGA flash control: anti-bricking, fallback & multiboot
  • SMBus access to unique board data and temperature sensor

Power Supply Monitoring & Reporting

  • Voltage monitoring
  • Temperature monitoring
  • Fault condition reporting to FPGA

Back Panel Features

  • User LEDs accessible
  • Reset switch to restore factory settings
  • Development Features (Behind Back Panel)
  • JTAG connector for access to the FPGA, flash & debug tools
  • GPIO connector
  • MicroSD connector


  • U.2 drive case optimized for cooling with passive heatsink


  • Cooling: Air convection
  • Operating temperature: 5°C to 35°C


  • 250-U2 FPGA card
  • Built-In-Self-Test (BIST)
  • 1-year access to online support lounge
  • 1-year hardware warranty


  • Technical specifications (e.g. FPGA type, size, exter- nal memory capacity etc.) can be modified to meet the exact needs of commercial customer applications as off-the-shelf product available to the general market.