High Speed USB 2.0 MS Pro/MS Duo/MS Card Reader - HUB-164-2MX
Long red LED shows with the card in; when with no card in, the LED is off - more info check here: https://www.electronic-sources.com/High-Speed-USB-2-0-MS-Pro-MS-Duo-MS-Card-Reader-30102072/
Quick Brief
Brand Name: Generic BrandModel Number: HUB-164-2MXType: SM CardInterface: USBCard Slots: All in 1 / Multi in 1Installation: ExternalPlace of Origin: Guangdong China (Mainland)
Product Features:
Long red LED shows with the card in; when with no card in, the LED is off