Nallatech 250-U2 – Proxy In-Line Accelerator (PIA)

Fully-programmable near-storage accelerator conforming to the U.2 form factor directly coupled to local DDR4 memory

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

U.2 Form Factor



  • Xilinx Kintex UltraScale+ FPGA
  • U.2 Form Factor
  • Fully Programmable
  • In-Line Acceleration


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
250-U2 Datasheet (255KB)

250-U2 Proxy In-Line Accelerator (PIA)

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
» KU11FPGA option, contact Nallatech for details

» One bank of DDR4 SDRAM x 72 bits
» 8GB 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

Notice: Nallatech’s PCIe compliant FPGA boards rely on the host’s cooling capabilities to stay within its acceptable operating temperature limits.

The user must make sure that the FPGA application is designed within the power limits documented by Nallatech and that sufficient cooling is provided to make sure the maximum FPGA die temperature is 15C below the maximum operating limit. Nallatech recommends that users perform a thermal characterization of their application in their system to meet these requirements.

» 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

Customization: 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.

View All Nallatech FPGA Cards

250-U2 Datasheet (255KB)

Contact Nallatech with your FPGA needs

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