Home > Product > Extender Board > EXSD4

SD 4.0 Card Extender Board

Brief Taiwan 1 Taiwan 2 China
Web Shop

First Impression

The EXSD4 is a debug and signal detection tool for Micro Secure Digital Memory Card. It allows a SD 4.0 card to be extend from the host slot for full access to the all of signal pins. UHS-II mode with maximum 312MB/s speed and UHS-I mode with maximum 104MB/s are supported. It also allows application of other Secure Digital Memory Card on the equipment which has SD card interface.     
It is especially designed to save valuable labor and time in the production environment. The EXSD4 is designed to minimize the signal degradation effects of the extender by proven design techniques. All SD signals has header pins for signal observation, including UHS-II LVDS signal pairs. Separate Vcc and ground planes. Provide a low inductance path to the host’s power supply. Also two power LEDs for dual VCCs to confirm power status and to identify UHS-II mode.

A clearly marked jumper header allows probing of all of pins. The EXSD4 include over-current protection function with PTC fuse. It’s also a powerful tool for engineers, or use for factory test protection.




  • Application of SD Memory Card on the equipment which has all signal pins are clearly marked.
  • Power and ground can be isolated for power measurements.
  • LED indicates powers status.
    VCC1 (3.3V) & VCC2 (1.8V)
  • Adds dumping resisters for all of signals.
  • Proving Pads for LVDS signal pairs
  • Supports both Secure Digital Memory Cards and 4bit MMC cards.
  • Supports SD UHS-II (312MB/s) & UHS-I (104MB/s , 50MB/s)
  • High quality connectors for long service life.
  • Over-current protection with PTC fuse.
    Approximately 500mA to trip
  • Passive adapter unnecessary.


  • Compliant with SD card 4.0 Specification
  • UHS-II supported: Max 312MB/s
  • Dimensions : 88mm * 36mm * 14mm.
  • Certification : RoHs


Web Shop

Unit price: USD 100.
(SD 4.0 Card Extender Board) x1

Buy Related Items


   Product Category

Flag Counter
Any of the trademarks,used or cited in the website of the Bplus Technology Co., Ltd. are the property of their respective owners.
Copyright©2009-2023 Bplus Tech. Corporation. All Rights Reserved
mini card rev 2.1 mini card 2.1 PCIe3.0延長線 PCIe 3.0延長線 PCIe延長線 PCIe3延伸線 PCIe 3.0延伸線 PCIe延伸線 PCIe Gen3 PCIe Gen3.0 PCIe 3.0 PCIe extender Internet of Things 物聯網 IoT FPC CFast MO-297 Half-Slim MO-300 i-SD i-TF Industrial Flash Storage USB 3.1 SD4.0 SD 4.0 SFF-8639 U.2 M.2 NGFF MiniCard Adapter  SD 4.0   SD4.0 Extender Board34/54mm ExpressCard Adapter micro SATAMini PCI-E  PCI-E Adapter mPCIe  USB 3.0Add-On-Card Enclosure mSATA SSD mSATAExtension Cable Expansion USB3.0 802.11n 802.11ac LTE Adapter LTE 802.16emetal bracket PCB to convert PCI Express Half Mini CardHalf Mini Card into Full Mini Card 802.11d 802.11e 802.11h 802.11i H.264 DVRCFAST SD to SATA SD to SATA RAID 連接器 適配器 延伸板 擴展板 讀卡器 配接器 迷你卡 DIY BOX eGPU GAME 天線 轉接卡