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USB to RS-232 RJ45 Serial Interface Adapter: ELK-USB2804
Utilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs
Housed in rugged, attractive plastic enclosure
Powered by USB connection
Provides 8 RJ45 serial ports with Tx/Rx status LEDs
High-retention USB type "B" connector prevents accidental disconnection of USB cable
Integrates transmit and receive LED indicators on each port
72" USB cable포함.
Software supports Windows 98SE/ME/2000/XP/Vista and Linux operating systems
The ELK-USB2804 8-port USB to serial adapter offers an easy way to connect multiple serial devices via a single USB port. The ELK-USB2804 uses a state-machine architecture that greatly reduces the host computer's overhead when communicating over multiple ports simultaneously. RS-232 data rates up to 921.6K bps are supported. The ELK-USB2804 is housed in a rugged, attractive plastic enclosure with a high-retention USB type "B" connector that prevents accidental disconnection of the included USB cable. The USB software drivers and utilities make installation and operation easy using Windows 98SE, ME, 2000, XP and Vista operating systems. After installing the software, the serial ports appear as standard COM ports to the host system enabling compatibility with legacy software. The ELK-USB2804 is USB bus powered, so no external power supply is required. For conveniently powering serial peripherals, ordering options allow an external power source to be connected to a DC jack on the rear of the unit. The supplied power is fused and connected to pin 5 on each of the eight RJ45 connectors.
Number of ports 8
Communications chip USB/UART
Max. data rate 921.6K bps
Max. data distance

up to 50 ft.
USB Specification 1.1 Compliant, 2.0 Compatible
Power Requirement +5V @ 500mA
Dimensions 9.2" (L) x 5.3" (W) x 1.7" (H)
Operating Temperature 0 - +70°C
Storage Temperature -50 - +105°C
Humidty Range 10 - 90% R.H.
ELK-USB2804 USB to RS-232 RJ45 Serial Interface Adapter
ELK-USB2804-DC05 USB to RS-232 RJ45 Serial Interface Adapter, for Powering 5VDC Serial Peripherals
ELK-USB2804-DC12 USB to RS-232 RJ45 Serial Interface Adapter, for Powering 12VDC Serial Peripherals
ELK-USB2804-DC24 USB to RS-232 RJ45 Serial Interface Adapter, for Powering 24VDC Serial Peripherals
ELK-CA127 DB9 Male to DB9 Female 72" in Length
ELK-CA246 CAT5 Patch Cable, 7' in Length - Blue
ELK-CA247 CAT5 Patch Cable, 10' in Length - Blue
ELK-HUB4 High Speed USB 2.0 4-Port Hub
ELK-HUB7 High Speed USB 2.0 7-Port Hub
ELK-KT105 Terminal Block Kit - ELK-TB05 + ELK-CA127 Cable
ELK-RJ25P232 DB25 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices
ELK-RJ25P8 DB25 Male to RJ45 Modular Adapter
ELK-RJ9P-232 DB9 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices
ELK-RJ9P8 DB9 Male to RJ45 Modular Adapter
ELK-TB05 Terminal Block - DB9 Female to 9 Screw Terminals
ELK-TBRJ45-KT Terminal Block Kit - RJ45 to 9 Screw Terminals
All specifications within this document are subject to change without notice.