a server

Abstract

The invention provides a server, which comprises a case, a handle, a mainboard, a signal transmission line and a VGA interface, wherein a mainboard is arranged in the case; the VGA interface is arranged in the handle; the handle is fixedly connected with the outer wall of the case; the mainboard comprises a first signal layer and a first ground layer; the first ground layer is connected with the case; the VGA interface comprises a connection part and a printed circuit board PCB; the PCB comprises a second ground layer and a second signal layer; the second ground layer is connected with the case; the second signal layer is connected with the connection part; the connection part is used for connecting external display equipment; the signal transmission line comprises a signal line and a shielding layer; the signal line is arranged in the shielding layer and connected to the first signal layer of the mainboard and the second signal layer of the PCB separately; and the shielding layer is connected with the first ground layer of the mainboard and the second ground layer of the PCB respectively. Through the server, the jig interference radiated by the signal transmission line can be reduced.

Description

technical field [0001] The present invention relates to the technical field of servers, in particular to a server. Background technique [0002] In the server, a VGA (Video Graphics Array, video image array) interface device is usually provided, and the VGA interface device can be connected to an external display device. In order to save the internal space of the server chassis, the VGA interface usually needs to be arranged outside the chassis. [0003] At present, the chassis of the server is usually made of conductive metal, which is connected to the ground, which can shield the electromagnetic interference outside the chassis, and at the same time shield the radiation generated by the functional components installed inside the chassis; the VGA interface is usually set on the handle outside the chassis Inside, after the VGA interface is connected to an external display device, the VGA signal can be transmitted to the VGA interface by the motherboard installed in the chass...

AI Technical Summary

Problems solved by technology

[0004] However, for the sake of aesthetics and cost savings, the handle of the case is usually made of plastic. When the signal transmission line is connected to the VGA interface and the main board in the case, the PCB of the VGA interface is grounded and the shielding layer of the signal transmission line is single-ended grounded. The VGA signal is a typical analog single-ended signal, which makes the longer signal transmission line generate strong common-mode interference, and radiates out through the external cable connected to the VGA interface.

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