CMS421 - Network switch Gembird - Free user manual and instructions

Product type	Manual computer switch (KVM)
Brand	Gembird
Model	CMS421
Number of supported computers	4
Keyboard/mouse connectivity	2 PS/2 ports
Video connectivity	VGA (HD15)
Maximum resolution	2048 x 1536
Video bandwidth	250 MHz
Keyboard/mouse emulation	Yes, integrated
Plug and Play	Yes (automatic initialization)
Hot-plug	Yes, without restart
Keyboard LED state saving	Yes
Mouse compatibility	Standard PS/2 mouse, 3 buttons, scroll wheel, Microsoft, Logitech, A4Tech, Genius
Maximum transmission distance	9 meters (PC side + console side)
Dimensions (L x W x H)	190 x 160 x 65 mm
Weight (estimated)	500 g
Warranty	36 months
Standards	CE, EMC (89/336/EEC)
System requirements	No software or driver required
Maintenance	Wipe with a soft, dry cloth
Recommended use	Sharing peripherals between 4 PCs

Frequently Asked Questions - CMS421 Gembird

How to connect multiple computers to this switch?

Connect each computer to the switch using PS/2 cables for keyboard and mouse, and a VGA cable for the monitor. The switch has 4 computer ports. Then, plug a PS/2 keyboard and mouse into the console ports of the switch. No software is required.

Can I use a USB mouse?

No, this switch only supports PS/2 devices. For a USB mouse, you would need a PS/2 adapter, but compatibility is not guaranteed.

Does the switch require an external power supply?

The switch is self-powered via the PS/2 ports. No external power supply is needed.

Can I connect or disconnect computers without turning off the switch?

Yes, the switch supports hot-plug. You can plug or unplug computers without restarting the switch or the PCs.

How to select the active computer?

Use the rotary button or manual selector on the switch to choose the active computer. The selection is mechanical.

What is the maximum supported video resolution?

The maximum resolution is 2048 x 1536 with a bandwidth of 250 MHz, providing excellent image quality.

Are the keyboard LEDs preserved when switching computers?

Yes, the switch saves and restores the state of the keyboard LEDs (Num Lock, Caps Lock, etc.) when you switch computers.

Can I use a wireless keyboard and mouse?

Only devices with a PS/2 connector are supported. Wireless keyboards/mice require a PS/2 receiver, but compatibility is not guaranteed.

What is the maximum distance between a PC and the switch?

The average transmission distance is 9 meters total (PC side + console side). Beyond that, signal quality may degrade.

What to do if the switch does not work?

Check that all cables are properly connected. Make sure the devices are PS/2 and that the computers are powered on. If the problem persists, refer to the 36-month warranty for a replacement.

USER MANUAL CMS421 Gembird

Abstract logo design featuring a stylized arrow and 'GE' letters, no readable text or symbols beyond the graphic elements.

GEMBIRD®

GEMBIRD® CMS-4.21 CPU MANUAL SWITCH PTON HPI/RADD AND ADJUSE CANDATION

MANUAL CPU SWITCH WITH KEYBOARD/MOUSE EMULATION FOR 4 PCS

MANUAL CPU SWITCH MIT TASTATUR / MAUS-EMULATION FÜR 4 PCS

HANDMATIGE SWITCH MET TOETSENBORD / MUIS EMULATIE VOOR 4 PC'S

MANUEL SWITCH 4 ORDINATEURS À LA FOIS AVEC LA SOURIS ET LE CLAVIER

• Allows to share 2 PS/2 devices among 4 PCs
  • Intelligent emulation of PS/2 keyboard and PS/2 mouse
• Plug and Play keyboard and mouse initialization
• Hot-plug connection of the computers without needs to reboot.
• Standard PS/2 mouse, 3-buttons, scrolling wheel, Microsoft®, Logitech®, A4Tech®, Genius® 4-5 buttons mice support
• Keyboard LED's status saving and restoring
  • Video resolution up to 2048x1536, video bandwidth 250 MHz, DDC, DDC2, DDC2B
• No software required

Specifications

• Average transmission distance: PC side to switch + console side to switch - 9 meters
  • Horizontal frequency: no limits
  • Vertical frequency: no limits
  • Resolution: no limits
  • Video bandwidth: no limits
  • Dimensions mm: (LxWxH): 190 x 160 x 65

graph TD
    A["Computer"] --> B["Server"]
    B --> C["PC1"]
    B --> D["PC2"]
    B --> E["PC3"]
    B --> F["PC4"]
    C --> G["PCI 200V"]
    D --> H["PCI 200V"]
    E --> I["PCI 200V"]
    F --> J["PCI 200V"]
    G --> K["PC 200V"]
    H --> L["PCI 200V"]
    I --> M["PCI 200V"]
    J --> N["PCI 200V"]
    K --> O["GEMBI/421"]
    L --> P["PCI 200V"]
    M --> Q["PCI 200V"]
    N --> R["PCI 200V"]
    O --> S["PCI 200V"]
    P --> T["PCI 200V"]
    Q --> U["PCI 200V"]
    R --> V["PCI 200V"]
    S --> W["PCI 200V"]
    T --> X["PCI 200V"]
    U --> Y["PCI 200V"]
    V --> Z["PCI 200V"]
    W --> AA["PCI 200V"]
    X --> AB["PCI 200V"]
    Y --> AC["PCI 200V"]
    Z --> AD["PCI 200V"]

2

Simple line drawing of a box with a crosshair and abstract shapes, no text or symbols present.

THE WORLD'S TENTUS, L. BARRIET

Hong Kong Timeway Technology Development Limited

EC DECLARATION OF CONFORMITY

Certificate Number: EMC0504081

We, the

Gembird Electronics Ltd.

Address: Room 1709, New Building, #2 Shennan Zhong Lu, Shenzhen

Declare the Product

Description: CPU and USB Manual Switch

Brand Name: Gembird

Model: CMSU-421

Complies with the requirements of the

EC Council Directive on electromagnetic compatibility 89/336/EEC

Applicable Standard (a):

EN65022:1998+A1:2000+A2:2003

EN55024: 1998+A1:2001+A2:2003

EN61000-3-2: 2000

EN81000-3-3: 1995+A1:2001

General Remarks

The tests were performed in normal operation mode. The test results apply only to the particular sample tested and to the specific tests

carried out.

This certificate applies specifically to the sample investigated in our test reference number only.

The CE markings as shown below can be affixed on the product after preparation of necessary conformity

documentation, as stipulated in article 10 of the Council Directive 93/68/EEC

Manufacturer/Importer

Signature CE KF Wan For Chief Executive Date of Issue: 2005-05-14

Test Laboratory

WARRANTY CONDITIONS	GARANTIE BEDINGUNGEN
The warranty period is 36 months and begins with the sale to the end user. The receipt must clearly list the date of purchase and the part number, in addition it should be printed. Keep the receipt for the entire warranty period since it is required for all warranty claims. During the warranty period the defective items will be credited, repaired or replaced at the manufacturer's expense. Work carried out under the warranty neither extends the warranty period nor starts a new warranty period. The manufacturer reserves the right to void any warranty claim for damages or defects due to misuse, abuse or external impact (falling down, impact, ingress of water, dust, contamination or break). Wearing parts (e.g. rechargeable batteries) are excluded from the warranty. Upon receipt of the RMA goods, Gembird Europe B.V. reserves the right to choose between replacement of defective goods or issuing a credit note. The credit note amount will always be calculated on the basis of the current market value of the defective products	Die Garantie beträgt 36 Monate ab Verkaufsdatum an den Endverbraucher. Das Kaufdatum und der Gerätetyp sind durch eine maschinell erstellte Kaufquittung zu belegen. Bitte bewahren Sie Ihren Kaufbeleg daher für die Dauer der Garantie auf, da er Voraussetzung für eine eventuelle Reklamation ist. Innerhalb der Garantiezeit werden alle Mängel, wahlweise durch den Hersteller entweder durch Instandsetzung, Austausch mangelhafter Teile oder im Austausch, behoben. Die Ausführung der Garantieleistung bewirkt weder eine Verlängerung noch einen Neubeginn der Garantiezeit. Eine Garantieleistung entfällt für Schäden oder Mängel die durch unsachgemäße Handhabung oder durch äußere Einwirkung (Sturz, Schlag, Wasser, Staub, Verschmutzung oder Bruch) herbeigeführt wurden. Verschleißteile (z.B. Akkus) sind von der Garantie ausgenommen.
Gembird Europe B.V.Wittevrouwen 56, 1358CD AlmereThe Netherlandswww.gembird.nl/[e-mail]. [phone](0900-4362473 inside The Netherlands, € 0,15 p/m, mobile costs not included)	Gembird Deutschland GmbHOverweg 27, 59494 SoestDeutschlandwww.gembird.de/[e-mail]. [phone]€0,14 aus dem deutschen Festnetz. Mobilfunkpreise können abweichen
GARANTIE VOORWAARDEN	CONDITIONS DE GARANTIE
De garantietermijn bedraagt 36 maanden en gaat in op de aankoopdatum van het product door de eindgebruiker. Op de aankoopbon moeten de aankoopdatum en productomschrijving duidelijk vermeld staan. Gelieve de aankoopbon de gehele garantieperiode te bewaren, deze is ten alle tijden benodigd voor alle garantie aanspraken. Tijdens de garantieperiode zullen alle gebreken verholpen of vervangen worden door de fabrikant d.m.v. reparatie, omruiling van het defecte onderdeel of het gehele apparaat. Aanspraken tijdens de garantieperiode leiden niet tot verlenging hiervan. Garantieaanspraak vervalt bij schade of gebreken die ontstaan zijn door oneigenlijk gebruik, misbruik of invloeden van buitenaf (vallen, stoten, water, stof, vuil of breken). Slijtagegevoelige onderdelen (b.v. batterijen) zijn uitgesloten van garantie. Bij ontvangst van de RMA goederen behoudt Gembird zich het recht om te kiezen tussen vervanging van de defecte waren of het uitgeven van een kreditnota. Het bedrag van de kreditnota zal altijd gecalculeerd zijn op basis van de huidige marktprijs voor het defecte produkt.	Garantie est de 36 mois a partir de la date d'achat de l'utilisateur final.Le talon de garantie doit énumérer clairement la date d'achat et le type d'appareil.Conservez le reçu d'achat pendant toute la durée de la garantie car elle est nécessaire pour toute réclamation.Au cours de la période de garantie tous les défauts doivent être remplacé aux frais du fabricant, soit par la réparation ou la remplacement de la pièce défectueuse ou l'ensemble du produit.Les travaux effectués sous garantie ne prolongent pas la période de garantie ni ne commencent pas une nouvelle période de garantie.Le fabricant se réserve le droit d'annuler toute demande de garantie pour les dommages ou défauts dus à une mauvaise utilisation, abus ou les effets externes (chute, choc, pénétration de l'eau, la poussière, etc..).Les pièces d'usure (par exemple les piles rechargeables) sont exclus de la garantie.Dès réception de la marchandise sous garantie, le SAV de Gembird Europe BV se réserve le droit de choisir entre le remplacement des produits défectueux ou de délivrer un avoir.Le montant d'avoir sera toujours calculée sur la base de la valeur actuelle du marché des produits défectueux.
Gembird Europe B.V.Wittevrouwen 56, 1358CD AlmereThe Netherlandswww.gembird.nl/[e-mail]. 0900-4362473€ 0,15 p/m binnen NederlandExclusief mobiele telefoonkosten	Gembird Europe B.V.Wittevrouwen 561358CD Almere, The Netherlandswww.gembird.nl/[e-mail]. [phone]Prix d'appel depuis telephone fixe Pays-Bas : 0.15 euro / minPrix d'appel depuis telephone mobile / autre pays - selon operateur

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