![](dsbh4smk.jpg) The D-Link DSB-H4SMK is a 4-port Universal Serial Bus
USB hub with 2 additional PS/2 ports for connection of a keyboard and mouse, and 1 RS-232
serial port for connection of a serial device. It allows a user to connect up to four USB
peripherals or devices, a PS/2 keyboard, a PS/2 mouse, and a serial device to a Windows98
PC. The DSB-H4SMK is targeted at Windows98 PC laptop and desktop users that are expanding
the number of USB ports on their systems and need to connect a serial device, PS/2
keyboard and PS/2 mouse.
The DSB-H4SMK provides quick and easy access to the four type 'A' downstream
ports for connecting peripherals with USB support. It also allows other USB hubs and
devices to be connected. A single type "B" upstream port is provided for
connecting to the host computer, or another USB hub. Two PS/2 ports are provided for easy
connection of a keyboard and mouse. A single serial port provides connection of a serial
device.
As a standard compliant USB hub, the D-Link DSB-H4SMK buffers USB data from any
attached peripherals or devices in strict adherence with USB Specification version 1.1 to
provide an invisible extension of the USB bus. Supporting both low speed 1.5Mb/s devices
and high speed 12 Mb/s devices, each port creates a bridge between the peripheral and host
computer. The two PS/2 ports allow a user to attach a legacy mouse and keyboard.
In self-powered mode, the DSB-H4SMK can support up to four high-powered USB
devices or up to four downstream bus-powered USB hubs. Diagnostic LED's are mounted on the
top of the device to provide the user with power and port status. The DSB-H4SMK is
packaged with all necessary manuals, a 6-foot USB 'A' to 'B' cable, a driver diskette, and
a DC power supply.
Standards
- USB Specification version 1.1
- OHCI
- UHIC
Supplied Current
- Self-Powered Mode: 500mA per USB port
Ports
- One upstream (USB Type B receptacle)
- Four downstream (USB Type A receptacles)
- Two PS/2 Ports (For a Mouse and Keyboard only)
- One RS-232 Serial Port
Wiring Topology
Connectivity Rules
- Five cascaded hubs maximum
- 5 m maximum between each hub
- Up to 127 devices
Diagnostic LED's
- Power and Port Status (one per port)
Temperature
- Operating Temperature: 0°C to 70°C
Humidity
- 5% to 95%, non-condensing
Power Requirements
Dimensions
Compliances
Safety
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D-Link Digital Video Camera, WebCam![](dsb560.gif)
D-Link USB V.90 Fax / Modem
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DSB to Ethernet Converter
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D-Link 4-Port Self or Bus Powered Hub
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D-Link A & B Connector cable
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D-Link USB Controller Card
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D-Link USB to Parallel Converter
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