Product comparison · 2 network cards

Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth vs QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s

7specifications compared
5differ
2identical
18known for one product only

Key differences

The QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s has 156 mm more depth than the Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth (186 mm vs 30 mm). Connectivity technology: Wireless on the Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth, Wired on the QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s. Interface: WLAN / Bluetooth on the Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth, Fiber on the QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s. Component for: PC on the Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth, Server/workstation on the QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s.

Connectivity technology
- 4XC1U87491 network card Internal WLAN / Bluetooth:Wireless
- QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s:Wired
Interface
- 4XC1U87491 network card Internal WLAN / Bluetooth:WLAN / Bluetooth
- QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s:Fiber
Component for
- 4XC1U87491 network card Internal WLAN / Bluetooth:PC
- QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s:Server/workstation
Depth
- 4XC1U87491 network card Internal WLAN / Bluetooth:30 mm
- QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s:186 mm

Side by side

Differences highlightedShow differences only

Comparison of 4XC1U87491, QXG-25G2SF-BCM
25 specifications	A Lenovo 4XC1U87491 network card Internal WLAN / Bluetooth Model 4XC1U87491 View product	B QNAP QXG-25G2SF-BCM network card Internal Fiber 25000 Mbit/s Model QXG-25G2SF-BCM View product
Ports & interfaces2 differ
Connectivity technologyDiffers	Wireless	Wired
InterfaceDiffers	WLAN / Bluetooth	Fiber
Fiber optic connectorKnown for one	Unknown — not stated by the source	SFP28
Fiber ports quantityKnown for one	Unknown — not stated by the source	2
PCI versionKnown for one	Unknown — not stated by the source	4.0
PCI Card form factorKnown for one	Unknown — not stated by the source	Full-height (low-profile)
Network1 differ
Networking standardsDiffers	IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, IEEE 802.11ac, IEEE 802.11ax, IEEE 802.11be	IEEE 802.3az, IEEE 802.1Q, IEEE 802.3x, IEEE 802.1p, IEEE 802.3ad, IEEE 802.3ae, IEEE 802.1as
Frequency rangeKnown for one	2.4 - 6 GHz	Unknown — not stated by the source
BluetoothKnown for one	Yes	Unknown — not stated by the source
Bluetooth versionKnown for one	5.4	Unknown — not stated by the source
Maximum data transfer rateKnown for one	Unknown — not stated by the source	25000 Mbit/s
LAN controllerKnown for one	Unknown — not stated by the source	Broadcom BCM57502
Design1 differ
Component forDiffers	PC	Server/workstation
AntennaKnown for one	Yes	Unknown — not stated by the source
Antenna designKnown for one	Internal	Unknown — not stated by the source
Antenna typeKnown for one	2x2	Unknown — not stated by the source
CertificationKnown for one	FCC/IC/NCC/Telec/NA/ACMA/MBIE/UKCA/MSIP/ANATEL/SRRC/More…	Unknown — not stated by the source
Product colourKnown for one	Unknown — not stated by the source	Silver, Dark Green
Poweridentical
Output voltageKnown for one	3.3 V	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	-10 - 70 °C	Unknown — not stated by the source
Weight & dimensions1 differ
WidthKnown for one	22 mm	Unknown — not stated by the source
DepthDiffers	30 mm	186 mm
HeightKnown for one	2.5 mm	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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