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PCIe to 4-Port USB 3.0 Expansion Card Internal Adapter for Desktop PC, 4-Pin Power, MSC9990 Chipset

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MCS9990 is a single-channel multi-function PCI Express card, capable of connecting 4 USB 2.0 host controllers. Each port has a bandwidth.; This enables four USB 2.0 host controllers to share the 2.5 Gbps wide PCI Express bus bandwidth.; It supports two operation modes:; The USB host mode and OTG mode can be selected by choosing the pins through the device mode.; The USB host mode supports four USB 2.0 host ports and four USB host controllers.; The OTG mode supports two USB 2.0 host ports, one USB OTG port, and provides the option to choose between GPIO or ISA interfaces.; Four USB 2.0 host ports are integrated with the on-chip transceiver and support four enhanced Host Controller Interface (EHCI) functions.; And four open host controller interfaces (OHCI).; The USB OTG port is integrated with the OTG PHY and supports both host and device operations.; The temporary ISA interface typically supports four serial ports and/or two parallel ports.; The 24 temporary GPIO pins can be programmed as either input or output.

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PCI Express Single-channel (x1) PCI Express endpoint controller with integrated PHY Compliant with the revised version 1.1 of the PCI Express basic specification - Compliant with PCI Express card specifications - Supports multiple DMA transactions - Supports eight PCI Express functions - Supports message TLP (error) generation - Supports legacy and MSI interrupt mechanisms - Supports PCIe power management through ASPM support USB Function - Four USB 2.0 host ports with on-chip transceivers, It can handle high-speed (480Mbps), full-speed (12Mbps) and low-speed ( 1.5M bps) rates. - The USB 2.0 host port can support OTG function.

- Four enhanced host controller interface (EHCI) controllers - Four companion open host controller interface (OHCI) controllers - Compatible with batch, interrupt and synchronous USB devices. Multiple high-performance USB devices can run simultaneously, and supports USB power management. - As an external device, OTG supports high-speed (HS) / full-speed (FS) operations. - As an external device, OTG
supports the following endpoints: 1 control endpoint 1 interrupt IN endpoint 2 Bulk IN endpoints 2 Bulk OUT endpoints The support for hot-swapping feature enables you to connect/disconnect devices without having to shut down the system first. System Requirements Windows® 2000, XP / 2003 / Vista / Win 10, Win 7 32-bit / 64-bit Systems that support PCI Express, with available PCI Express slots It can be used in conjunction with various types of USB devices, in...

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First Listed on Newegg	June 28, 2026

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Item#: 9SIC7FWM0K1043