Intel 82545Em Gigabit Nic (Jp22) - TYAN TRINITY GC-SL Manual

(JP10) (PCI-X Slot#2 at PCI Bus 2, for slot located next to the 32-bit PCI)
Open the jumper to set slots to PCI-X mode.
(This is the default setting for S2707GN)
Close the jumper to set the slots to PCI mode.
(This is the default setting for S2707UGN, if onboard AIC -7892x is present.)
Note:
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No PCI-X 133/100 MHz jumper for Bus #2
Because this slot shares PCI Bus #2 with onboard 82545EM GbE and SCSI, the
Bus #2 has more than one device loads and cannot support PCI-X 133 MHz by
PCI-X specifications. Hence, there is no PCI-X 133MHz support for Bus #2.
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PCI-X/PCI Mode on Bus #2
The onboard AIC-7892x Ultra160 SCSI controller cannot support PCI-X mode,
JP10 should be set to CLOSE in this case. However, because the optional
AIC-7901 Ultra320 SCSI can support PCI-X model, JP10 can be set to OPEN for
S2707GN
2.7 – Onboard LAN - Intel 82545EM Gigabit NIC (JP22)
Enabled
(default)
Disabled
(non-SCSI) or with optional AIC-7901.
Open the jumper(s) to enable the Onboard Intel 82545EM Gigabit
Ethernet chip.
CLOSE the jumper(s) to disable the Onboard Intel 82545EM Gigabit
Ethernet chip.
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