A4 Tech. Posted on September 24, 2020 by admin Below are all the different types of A4 Tech.. Select the device of your choice, to download the manual or user guide. 4D BT-630 G7-630 G7-750 NB-30 NB-60 Office 8K PK-335 PK-35N PK-5 PK-635 PK-935 SG-XPCIE2FCGBE-E-Z Wireless 1-Wheel Mouse X-708 X-710 X-718 (adsbygoogle = window.adsbygoogle || []).push({}); Home A4 Tech.