User`s manual

Introduction • 11
storage device. Only one device can be connected with the IDE interface.
In addition to the 40-pin IDE connector, a 4-pin power connector for
external drives is also available. This feature makes OS or software
installation easier than ever by simply connecting an IDE interface to the
external IDE device.
1.3.7 Universal Serial Bus (USB)
The Universal Serial Bus (USB) R1.1 provides a common interface to
low-speed peripherals such as keyboard, mouse, speakers, printer, etc.,
simplifying cabling needs. Data throughput is up to 12Mb/s. The USB ports
also provide +5V power at 0.5A to the peripherals.
There are four USB ports on the PXD-3710/3710F. Both USB-1 and USB-2
are accessible on the front faceplate and the USB-3 is designed to support
the CompactFlash interface on the front panel, which is the hot swappable.
The USB-4 is routed to the RTM, PXD-R3000 via the J2 connector.
1.3.8 Hot-swappable CF Interface
An external CompactFlash socket is available on the PXD-3710/3710F front
panel. The external CompactFlash interface provides Plug and Play features
that are also hot swappable. Therefore, a CompactFlash card can be used as
a replacement for floppy disks and can also provide very large storage
capability (up to 512MB or more). It is also possible to set this CF interface as
a boot device by selecting boot on USB in the BIOS menu. Note that drivers
are needed for the external CompactFlash interface. Refer to section 3.3.2
for installation details.
1.3.9 Floppy Disk Drive
The PXD-3710, by default, does NOT come equipped with a Floppy Disk
Drive. For most of the applications, the hot-swappable CF card can replace
the functionality of a FDD. However, ADLINK still provides the FDD option on
the model PXD-3710F, which occupies the 4 slot (16HP) spaces.
1.3.10 Serial I/O
The PXD-3710/3710F provides support for two 16C550 UARTS serial ports.
COM1 is accessible from the front faceplate through a DB-9 connector and
COM2 is available on the RTM, PXD-R3000. Both serial ports are RS-232
compatible and include a complete set of handshaking and modem control
signals, maskable interrupt generation, and data transfer rates up to 114.2k
baud.
COM1 is jumper-selectable to support a RS-422/485 interface. The RS-485
mode supports auto direction control which can automatically sense the
direction of data flow and switch the transmission direction accordingly. This
feature will make half duplex RS-485 control under a multitasking OS (e.g.
Windows) to be the same as the full duplex RS-232.