PCI\VEN_10EC&DEV_522A
RTS522A PCI Express Card Reader driver
PCI\VEN_10EC&DEV_522A is the Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader, a card reader device. Without it the SD card slot does nothing or shows as a Base System Device. Get it from Windows Update or your PC maker first; the chip maker's own package is on intel.com.
Device details
| Hardware ID | PCI\VEN_10EC&DEV_522A |
|---|---|
| Device name | RTS522A PCI Express Card Reader |
| Maker | Realtek Semiconductor Co., Ltd. (PCI vendor ID 10EC) |
| Device type | Card reader |
| Driver guide | Fix Base System Device driver |
| Latest official package | Intel Chipset INF Utility 10.1.20658.8883, January 8, 2026 |
| Known OEM variants | 3 |
PCs and boards that use this chip
Each line is a subsystem ID: the full hardware ID ends in SUBSYS_ plus these eight characters when the RTS522A PCI Express Card Reader is built into that maker's product.
| Full hardware ID ending | Maker | Product |
|---|---|---|
SUBSYS_8079103C | Hewlett-Packard Company | EliteBook 840 G3 |
SUBSYS_825B103C | Hewlett-Packard Company | OMEN-17-w001nv |
SUBSYS_512417AA | Lenovo | ThinkPad E595 |
If your SUBSYS matches a laptop or board maker in this list, that maker's support page has the version tested for your model.
How to install the driver for RTS522A PCI Express Card Reader
- Confirm the ID. In Device Manager, right-click the device, open Properties, then Details, and pick Hardware Ids. The first line should start with
PCI\VEN_10EC&DEV_522A. - Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Card reader drivers often appear here.
- Check your PC maker. Enter your model or serial number on its support site and look under Card Reader or Chipset.
- Use the chip maker's package. Intel Chipset INF Utility on intel.com. Our fix base system device driver guide explains which package fits.
- Restart and check. Insert an SD card and check it opens in File Explorer.
Other Realtek card reader IDs
VEN_10EC&DEV_5209RTS5209 PCI Express Card ReaderVEN_10EC&DEV_5227RTS5227 PCI Express Card ReaderVEN_10EC&DEV_5228RTS5288 PCIe SD UHS-I Card Reader controllerVEN_10EC&DEV_5229RTS5229 PCI Express Card ReaderVEN_10EC&DEV_5249RTS5249 PCI Express Card ReaderVEN_10EC&DEV_524ARTS524A PCI Express Card ReaderVEN_10EC&DEV_5250RTS5250 PCI Express Card ReaderVEN_10EC&DEV_525ARTS525A PCI Express Card Reader
Device names: The PCI ID Repository, public data. We never host driver files: downloads come from the maker.