Dell PowerEdge 1850 - Manual (Page 11)

Connecting External Devices
When connecting external devices to your system, follow these guidelines:
l Most devices must be connected to a specific connector and device drivers must be installed before the device operates properly. (Device drivers are
normally included with your operating system software or with the device itself.) See the documentation that accompanied the device for specific
installation and configuration instructions.
l Always attach external devices while your system is turned off. Next, turn on any external devices before turning on the system (unless the
documentation for the device specifies otherwise).
For information about individual connectors, see your Installation and Troubleshooting Guide. For information about enabling, disabling, and configuring I/O ports
and connectors, see "
Using the System Setup Program ."
System Features
l One or two Intel Xeon processors with an internal operating speed of at least 2.8 GHz, a level 2 cache of at least 1 MB, and a front -side bus operating
at 800 MHz.
l Support for symmetric multiprocessing (SMP), which is available on systems with two Intel Xeon microprocessors. SMP greatly improves overall system
performance by dividing microprocessor operations between independent microprocessors. To take advantage of this feature, you must use an
operating system that supports multiprocessing.
l A minimum of 256 MB of registered PC2-3200 DDR 2 400 SDRAM memory modules, upgradable to a maximum of 16 GB by installing combinations of 256-
MB, 512-MB, 1-GB, 2-GB, or 4-GB (when available) 2-way interleaving memory modules in the six memory module sockets on the system board.
l Support for up to two 1-inch, internal U320 SCSI hard drives (with hot-plug capability when using the optional RAID capability).
l An optional single, 1.44-MB, 3.5-inch diskette drive.
l An optional IDE CD or DVD drive.
l Up to two hot-pluggable, 550-W power supplies in a 1 + 1 redundant configuration.
l Four redundant system cooling fans.
The system board includes the following features:
l One of the following riser card options:
¡ A riser card that has one 3.3-V, 64-bit, 100-MHz PCI-X expansion slot and one 3.3-V, 64-bit, 133MHz PCI-X expansion slot. Expansion card slots
accommodate full-height, half-length expansion cards.
or
¡ A riser card (when available) that has one 3.3-V, 64-bit, 100-MHz PCI-X expansion slot, one 3.3-V, 64-bit, 133MHz PCI-X expansion slot, and RAID
on motherboard (ROMB). Expansion card slots accommodate full-height, half-length expansion cards.
NOTE: Use the optional RJ-45 extension cable that came with your system to facilitate installation of network cables. For more information, see your
Installation and Troubleshooting Guide.
NOTE: If you decide to upgrade your system by installing a second microprocessor, you must order the microprocessor upgrade kits from Dell. Not
all versions of the Intel Xeon microprocessor will work properly as additional microprocessors. The upgrade kit from Dell contains the correct
version of the microprocessor as well as the instructions for performing the upgrade. Both microprocessors must have the same internal operating
frequency and cache size.