Our take
The InFocus Work Big IN2104 is a conventional XGA DLP projector for a meeting room that still depends on VGA-style computer inputs and legacy video. The manufacturer-authored IN2100 sheet distinguishes the IN2104’s 1024 × 768 native resolution from its SVGA and WXGA siblings, and lists 2,500 normal-mode lumens, 1.1× zoom, 1.97–2.16:1 throw, a 2 W speaker, and dual computer inputs. The output figure is not labeled ANSI, so it remains outside ANSI-based brightness ranking. It is a mains-powered lamp projector whose old connections and lamp hours should be checked before use.
A room maintaining older VGA or analog presentation equipment that can verify image brightness and lamp status on the individual unit..
Skip it if you need Full HD or 4K detail, an ANSI brightness threshold, HDMI-only connections, streaming apps, battery operation, or an ultra-short-throw installation.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The model-specific sheet separates the IN2104’s XGA native grid from sibling model resolutions.
- Dual D-sub computer inputs, USB, RS-232, and analog video suit some legacy rooms.
- A 1.1× zoom and 1.97–2.16:1 throw provide a documented conventional placement range.
What to weigh up
- The 2,500-lumen claim is not labeled ANSI and should not be compared as an ANSI value.
- Native XGA is below WXGA and Full HD for text detail and widescreen content.
- No HDMI input or integrated streaming platform is documented in the sheet.
Specifications and exact model details
The key details
| Model covered | IN2104 |
|---|---|
| Image format | Native XGA 1024 × 768 1-chip DLP |
| Rated light output | 2,500 normal / 1,800 eco lumens; not labeled ANSI |
| Placement | 1.97–2.16:1 throw; 1.1× zoom; 6.9 lb; 2 W speaker |
Performance figures are manufacturer claims. Source checked October 15, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Is the IN2104’s resolution right for your material?
The InFocus sheet identifies the IN2104 specifically as XGA at 1024 × 768, while the same document lists a lower-resolution IN2102 and higher-resolution IN2106. That model distinction matters when examining a mixed used-projector offer. XGA’s 4:3 image can work for legacy slides and basic meeting material, but it has less detail than WXGA and native Full HD. Source inputs may accept other signals without changing the physical pixel grid. If attendees need to read small labels or view a modern widescreen desktop, check a Full HD alternative rather than inferring resolution from an input specification.
What do the 2,500-lumen and 1,800-lumen figures mean?
InFocus lists 2,500 lumens in normal mode and 1,800 in eco mode for the IN2100 series. The sheet does not label these figures ANSI, so the product’s ANSI brightness attribute remains unknown. Keep them separate from manufacturer ANSI ratings such as the PJD6352’s 3,500 ANSI lumens. Lamp age, mode, screen size, and room light change the practical result, and an old used lamp may be far below its new specification. Ask for lamp hours and examine the projected image in the intended room before relying on the unqualified output claim.
Will your existing computer and video sources connect?
The IN2100 sheet lists two D-sub HD15 computer inputs, S-Video, composite video, USB, two audio inputs, and RS-232. It also lists a monitor loop-through, audio output, and a 5 V DC output. Those connections can help preserve an older conference setup, but the sheet does not list HDMI. A modern laptop, disc player, or streamer may need an active signal converter; check format and copy-protection compatibility with the exact source instead of assuming a simple cable is sufficient. The built-in speaker is rated at 2 W and may not cover a large room, so plan external audio if needed.
How should you plan throw and maintenance?
InFocus specifies a 1.97–2.16:1 throw ratio and 1.1:1 zoom, a conventional placement that needs a substantial lens-to-screen distance. The screen-size chart should be used to locate the mount; digital vertical keystone can address a small tilt but does not turn this into a short-throw projector. The IN2104 uses a 200 W lamp in normal mode and a lower-power eco setting according to the manufacturer document. A used example should be checked for lamp hours, ventilation, image uniformity, and working controls. Leave clearance around the body and allow the lamp to cool before moving the unit.
Who should choose it instead of the BenQ MP721c?
Choose the IN2104 when a legacy room benefits from two computer inputs, USB, RS-232, and a model-specific XGA DLP identity. The BenQ MP721c also uses XGA and older inputs, with a DVI-I connector in analog mode and a 2 W speaker; its shared manual does not establish an ANSI output figure either. The ViewSonic PJD6352 is a stronger option when dual HDMI and a documented 3,500 ANSI rating matter more than legacy compatibility. These are documented connection and specification differences. Inspect each used projector’s lamp, ports, remote, and operating condition rather than assuming old model specifications describe a particular unit.
Compare for your needs
The ViewSonic PJD6352 adds dual HDMI and a stated ANSI-lumen figure, while the BenQ MP721c offers another compact XGA projector with a different legacy input mix.
Find the video projector that fits you.
Tell us what matters. We’ll help you weigh the options.
Before you buy
Is the IN2104 brightness rating ANSI lumens?
No ANSI method is stated on the InFocus-authored sheet; it lists normal and eco lumens without that label.
Does the IN2104 have HDMI input?
The manufacturer sheet lists dual D-sub computer inputs and analog video, USB, and RS-232, but does not list HDMI.
Is the IN2104 the WXGA model in its series?
No. The sheet identifies IN2104 as XGA 1024 × 768; it distinguishes the IN2106 as WXGA.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- InFocus-authored IN2100-series specification sheet ↗ — checked October 15, 2026.
- InFocus-authored IN2100-series specification sheet ↗ — checked October 15, 2026.
The decision
The IN2104 is a niche legacy-room fit with model-specific XGA and connection details. Keep ANSI brightness unknown and inspect the used lamp and ports.
Is it the right fit?
Check the exact model and today’s offers on Amazon.