Driver NameOperating
System
Release Date
Version
Link

O2Micro BH-778 Controller Drivers

Windows 10, Windows 11
2021-11-02
v.2.1.101.10530

O2Micro OZ776 USB CCID Smartcard Reader Drivers

Windows 10, Windows 11
2021-11-01
v.2.11.4.250

O2Micro OZ776 USB Card Reader Driver

Windows 8, Windows 8.1, Windows 10
2023-06-02
v.2.11.4.261

O2Micro BH-201 Card Reader Driver

Windows 7, Windows 8, Windows 8.1, Windows 10
2019-06-28
v.1.1.102.1027, v.1.1.102.1024, v.1.1.102.1020

O2Micro Integrated MS/MSPRO/xD Controller

Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10
2009-07-14
v.2.1.1.317

O2Micro BayHubTech Integrated MMC/SD controller Drivers

Windows 10, Windows 11
2021-05-17
v.1.1.101.10420, v.1.1.101.1025, v.1.1.101.1023

O2Micro CR BH-778 Driver

Windows 10, Windows 11
2023-06-15
v.2.1.101.10650

O2Micro BH-201 Card Reader Driver

Windows 7, Windows 8, Windows 8.1, Windows 10
2020-07-07
v.1.1.102.1032

O2Micro OZ776 USB Card Reader Drivers

Windows 7, Windows 8, Windows 8.1
2017-02-26
v.1.1.4.232

O2Micro BH778 BayHubTech Flash Memory Card Driver

Windows 7, Windows 8, Windows 8.1, Windows 10
2016-08-02
v.1.1.1.1013

O2Micro MemoryCardBus Accelerator Driver

Windows XP
2006-01-03
v.1.0.8.82

O2Micro CR BH-778 Driver

Windows 10, Windows 11
2023-02-09
v.2.1.101.10640

O2Micro BH-778 Card Reader Driver

Windows 10, Windows 11
2021-11-08
v.2.1.101.10540

O2Micro BayHubTech Integrated MMC/SD controller Drivers

Windows 10
2016-12-29
v.1.1.1.10171

O2Micro CR BH-778 Driver

Windows 10, Windows 11
2023-06-25
v.2.1.101.10660

Find drivers for O2Micro card reader controllers used in many laptops and desktop motherboards. This category provides signed installers and ZIP packages for internal and USB-connected card readers that enable SD, microSD, MMC and Memory Stick support. Available files cover common O2Micro controller families and include 32‑ and 64‑bit builds for modern Windows releases (Windows 7, 8, 10, 11) and several legacy variants; release notes indicate supported hardware IDs and version history.

To download and install: select the package that matches your hardware ID or laptop model, download the installer or INF archive, unzip if needed, run setup.exe or update the driver through Device Manager, then reboot. If automatic setup fails, use the hardware VEN_/DEV_ ID to pick the correct INF. Check digital signatures, back up the current driver and create a system restore point before changes. Compatibility can vary due to OEM customizations—if a generic driver won’t load, try the vendor-specific package listed. Each download includes a README with installation tips and troubleshooting steps.