Adapter
Adapter and Accessory
Adapter
Adapter
Adapter
Adapter
Adapter
MRT Memory manufactures wholesale memory card adapters including SD to micro SD adapters, USB card readers, and multi-card adapters. These bulk memory card adapters ensure compatibility across all device formats and are perfect accessories for bulk memory card orders. Custom packaging and logo options available. Get your free quote.
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We can classify the wholesale memory card readers by slots, speed, and connector. Firstly, let’s check about the slots difference.
1.Single-slot card reader
Obviously, this card reader just supports one type of memory card. The design of this reader is simple, slim, and light, it is also a cost-efficient option.
2.Multi-slots card reader
This card reader delivers multifunction and high level. The chip inside can be compatible with different protocol; therefore, the price is more expensive.
The connector of card reader mainly has USB, Type-c, Micro USB, and Lightening. These designs are related to the devices you use. To read memory card in most equipment, manufacturers have developed card readers in versatile shapes. Moreover, they have different speed version. It is almost same as standard USB flash drive, there are USB 2.0 and USB 3.0
A: We produce a comprehensive range of card readers including single-slot readers (SD, microSD, CF), multi-card readers (supporting SD/microSD/CF/MS/MMC simultaneously), USB 2.0/3.0/3.1 readers, USB-C readers, and OTG readers for mobile devices. Our readers support plug-and-play functionality and work with Windows, macOS, Linux, Android, and iOS systems.
USB 2.0 readers offer transfer speeds up to 480Mbps (60MB/s), suitable for standard SD cards. USB 3.0 readers provide speeds up to 5Gbps (625MB/s), ideal for UHS-II SD cards, high-speed microSD, and CF cards. USB 3.1 Gen 2 readers support up to 10Gbps. For professional photographers and videographers using UHS-II or high-speed CF cards, we strongly recommend USB 3.0 or higher readers to maximize transfer efficiency.
A: Yes, we manufacture OTG (On-The-Go) card readers with multiple connector options: Micro-USB OTG for older Android devices, USB-C OTG for modern Android phones and iPad Pro, and Lightning OTG for iPhones and iPads. These compact readers allow direct file transfer between memory cards and mobile devices without needing a computer—perfect for field photography, video recording, and mobile data management.
A: Absolutely. We offer full OEM/ODM services for card readers including custom plastic housing colors, logo printing (silk screen or UV), custom packaging design, and even custom PCB designs for unique specifications. MOQ for branded card readers starts at 500 units. We can also pre-load drivers or custom software onto the readers for enterprise customers. Contact our sales team for customization options and pricing.
A: Our standard MOQ is 100 units per model for stock designs. For custom-branded readers, MOQ starts at 500 units. We offer competitive tiered pricing: 100 units (standard wholesale), 500 units (5% discount), 1,000 units (10% discount), and 5,000+ units (custom pricing). Mixed-model orders are accepted with minimum 50 units per model. All wholesale orders include 1-year warranty and technical support.
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Adapter and Accessory