Overview
The I-O DATA DFML-560ER is an external analog modem that connects via RS-232C (serial) interface. It supports a maximum data rate of 56kbps (V.90/V.92) and is designed for dial-up internet access or fax communication over analog telephone lines. This RoHS-compliant device is sold on Amazon.co.jp (ASIN: B001BMK0IS, model: DFML-560ER).
Key Features
- RS-232C (D-sub 9-pin) interface for broad compatibility with legacy PCs and industrial equipment
- 56kbps data rate with V.90/V.92 support
- External design with status LEDs for easy monitoring
- RoHS compliant for environmentally conscious use
- Compact dimensions (approx. 161×132×36 mm) save desk space
Compatibility and Connection Notes
This modem requires a device with an RS-232C serial port. Most modern computers lack a native serial port, so a USB-to-serial adapter (preferably with an FTDI chip) is necessary. Be aware that some adapters may cause instability; choose a reliable brand.
The DFML-560ER is designed exclusively for analog telephone lines. It will not work with fiber optic or VoIP services. Ensure you have an active analog line before purchasing.
Ideal Use Cases
- Connecting legacy industrial machines or POS systems via serial
- Setting up a fax server or dial-up connection over an analog line
- Retro computing enthusiasts wanting to get a vintage PC (e.g., DOS/V, PC-98) online
- Users who prefer a trusted Japanese brand for reliable modem hardware
Important Considerations
- Actual throughput depends on line quality; 56kbps is the theoretical maximum.
- Use only the included AC adapter for power.
- Disconnect the phone line during thunderstorms to protect against surges.
- Driver support for modern Windows versions (10/11) may be limited. Verify compatibility before purchase.
Product Disclosure (Amazon)
- Manufacturer: アイ・オー・データ
- Seller: RーShop(適格請求書発行事業者)
- Fulfilled by: Amazon
- Model: DFML-560ER
- ASIN: B001BMK0IS
- Note: This article covers a manufacturer-made product based on Amazon listing details.