Huidu HD-R508T receiving card for LED display panels
The HD-R508T provides eight HUB75E module outputs for a compatible LED display control system. It receives data over Gigabit Ethernet and works with synchronous, asynchronous and dual-mode sending devices.
Technical specifications
The table follows the linked HD-R508T V0.1 specification. The recommended load must be considered together with the module-width limits.
| Module outputs | 8 × HUB75E |
|---|---|
| Recommended loading | 65,536 pixels (128 × 512) |
| Module width limits | Outdoor ≤256 pixels; indoor ≤128 pixels |
| Driver IC support | Common ICs and most PWM ICs |
| Scan / grayscale | Static to 1/64 / 256–65,536 |
| Network | 2 interchangeable Gigabit Ethernet ports |
| Cable distance | Super Cat5 / Cat6 within 80 m |
| Power connections | 2 DC interfaces; either one may be connected |
| Supply voltage | 5 V recommended; PDF ranges: 4–6 V, 4.5–5.5 V and 4.2–5.5 V |
| Power consumption | 5 W |
| Operating / storage temperature | −40°C to 80°C / −40°C to 105°C |
| Operating humidity | 0–95% |
| Net weight | Approximately 0.086 kg |
Connection and configuration
Check the LED module’s driver IC, scan mode and HUB75E pinout before connecting it. The two network ports are interchangeable, receiving cards can be arranged in any sequence, and smart settings allow screen routing to follow the cabinet wiring. Use the specification’s recommended 5 V supply; its conflicting voltage limits require revision confirmation.


HD-R508T frequently asked questions
What pixel load is recommended for HD-R508T?
The V0.1 specification recommends 65,536 pixels, shown as 128 × 512. It also lists outdoor module width ≤256 pixels and indoor module width ≤128 pixels. Confirm the cabinet layout against both the load and module-width restrictions.
Does R508T support synchronous and asynchronous control?
Yes. The PDF lists dual-mode sending boxes, asynchronous sending cards, synchronous sending cards and VP-series video processors. Match the sending system and module configuration before installation.
How many HUB75E connectors are on the R508T?
There are eight onboard HUB75E connectors for LED modules, plus two interchangeable Gigabit Ethernet ports and two DC power interfaces.
What voltage is recommended for the R508T?
Use the document’s recommended standard 5 V supply. The PDF contains different limits: 4–6 V in the parameter table, 4.5–5.5 V at the power interfaces and 4.2–5.5 V in the technical table. Confirm the supplied revision before using another voltage.
How can I test an LED panel connected to R508T?
The card includes a test button for checking brightness uniformity and module flatness. D1 flashing shows normal card operation, while rapid D2 flashing shows Gigabit recognition and received data.





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